Home / 9,678.21-13,363.46-7,436.55

Finding the Fourth Proportional to 9,678.21, 13,363.46 and 7,436.55

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Solution

The fourth proportional to 9,678.21, 13,363.46 and 7,436.55 is: 10,268.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,678.21 : 13,363.46 = 7,436.55 : x
  2. Step 2: Convert to fraction form
    9,678.21/13,363.46 = 7,436.55/x
  3. Step 3: Cross multiply
    9,678.21x = 13,363.46 × 7,436.55
  4. Step 4: Simplify right side
    9,678.21x = 99,378,001.28
  5. Step 5: Solve for x
    x = 99,378,001.28/9,678.21
  6. Step 6: Final answer
    x = 10,268.22

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Half scale
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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.