Home / 31,006.98-42,790.17-16,859.91

Finding the Fourth Proportional to 31,006.98, 42,790.17 and 16,859.91

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Solution

The fourth proportional to 31,006.98, 42,790.17 and 16,859.91 is: 23,266.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,006.98 : 42,790.17 = 16,859.91 : x
  2. Step 2: Convert to fraction form
    31,006.98/42,790.17 = 16,859.91/x
  3. Step 3: Cross multiply
    31,006.98x = 42,790.17 × 16,859.91
  4. Step 4: Simplify right side
    31,006.98x = 721,438,415.08
  5. Step 5: Solve for x
    x = 721,438,415.08/31,006.98
  6. Step 6: Final answer
    x = 23,266.97

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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.