Home / 20,685.61-31,031.45-9,593.40

Finding the Fourth Proportional to 20,685.61, 31,031.45 and 9,593.40

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Solution

The fourth proportional to 20,685.61, 31,031.45 and 9,593.40 is: 14,391.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.61 : 31,031.45 = 9,593.40 : x
  2. Step 2: Convert to fraction form
    20,685.61/31,031.45 = 9,593.40/x
  3. Step 3: Cross multiply
    20,685.61x = 31,031.45 × 9,593.40
  4. Step 4: Simplify right side
    20,685.61x = 297,697,112.43
  5. Step 5: Solve for x
    x = 297,697,112.43/20,685.61
  6. Step 6: Final answer
    x = 14,391.51

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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.