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Finding the Fourth Proportional to 9,898.10, 13,661.14 and 7,392.76

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Solution

The fourth proportional to 9,898.10, 13,661.14 and 7,392.76 is: 10,203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,898.10 : 13,661.14 = 7,392.76 : x
  2. Step 2: Convert to fraction form
    9,898.10/13,661.14 = 7,392.76/x
  3. Step 3: Cross multiply
    9,898.10x = 13,661.14 × 7,392.76
  4. Step 4: Simplify right side
    9,898.10x = 100,993,529.35
  5. Step 5: Solve for x
    x = 100,993,529.35/9,898.10
  6. Step 6: Final answer
    x = 10,203.32

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Half scale
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Double scale
Find fourth proportional to 9,899.10, 13,662.52 and 7,393.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.