Home / 31,045.07-42,842.30-16,897.88

Finding the Fourth Proportional to 31,045.07, 42,842.30 and 16,897.88

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Solution

The fourth proportional to 31,045.07, 42,842.30 and 16,897.88 is: 23,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,045.07 : 42,842.30 = 16,897.88 : x
  2. Step 2: Convert to fraction form
    31,045.07/42,842.30 = 16,897.88/x
  3. Step 3: Cross multiply
    31,045.07x = 42,842.30 × 16,897.88
  4. Step 4: Simplify right side
    31,045.07x = 723,944,044.32
  5. Step 5: Solve for x
    x = 723,944,044.32/31,045.07
  6. Step 6: Final answer
    x = 23,319.13

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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.