Home / 31,045.20-42,841.08-16,897.20

Finding the Fourth Proportional to 31,045.20, 42,841.08 and 16,897.20

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Solution

The fourth proportional to 31,045.20, 42,841.08 and 16,897.20 is: 23,317.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,045.20 : 42,841.08 = 16,897.20 : x
  2. Step 2: Convert to fraction form
    31,045.20/42,841.08 = 16,897.20/x
  3. Step 3: Cross multiply
    31,045.20x = 42,841.08 × 16,897.20
  4. Step 4: Simplify right side
    31,045.20x = 723,894,296.98
  5. Step 5: Solve for x
    x = 723,894,296.98/31,045.20
  6. Step 6: Final answer
    x = 23,317.43

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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.