Home / 20,070.47-27,701.85-13,356.38

Finding the Fourth Proportional to 20,070.47, 27,701.85 and 13,356.38

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Solution

The fourth proportional to 20,070.47, 27,701.85 and 13,356.38 is: 18,434.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.47 : 27,701.85 = 13,356.38 : x
  2. Step 2: Convert to fraction form
    20,070.47/27,701.85 = 13,356.38/x
  3. Step 3: Cross multiply
    20,070.47x = 27,701.85 × 13,356.38
  4. Step 4: Simplify right side
    20,070.47x = 369,996,296.79
  5. Step 5: Solve for x
    x = 369,996,296.79/20,070.47
  6. Step 6: Final answer
    x = 18,434.86

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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.