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Finding the Fourth Proportional to 9,919.10, 14,953.74 and 9,383.28

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Solution

The fourth proportional to 9,919.10, 14,953.74 and 9,383.28 is: 14,145.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,919.10 : 14,953.74 = 9,383.28 : x
  2. Step 2: Convert to fraction form
    9,919.10/14,953.74 = 9,383.28/x
  3. Step 3: Cross multiply
    9,919.10x = 14,953.74 × 9,383.28
  4. Step 4: Simplify right side
    9,919.10x = 140,315,129.47
  5. Step 5: Solve for x
    x = 140,315,129.47/9,919.10
  6. Step 6: Final answer
    x = 14,145.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.