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Finding the Fourth Proportional to 35,480.61, 53,221.13 and 10,520.89

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Solution

The fourth proportional to 35,480.61, 53,221.13 and 10,520.89 is: 15,781.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,480.61 : 53,221.13 = 10,520.89 : x
  2. Step 2: Convert to fraction form
    35,480.61/53,221.13 = 10,520.89/x
  3. Step 3: Cross multiply
    35,480.61x = 53,221.13 × 10,520.89
  4. Step 4: Simplify right side
    35,480.61x = 559,933,601.80
  5. Step 5: Solve for x
    x = 559,933,601.80/35,480.61
  6. Step 6: Final answer
    x = 15,781.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.