Home / 30,862.80-42,590.16-16,715.52

Finding the Fourth Proportional to 30,862.80, 42,590.16 and 16,715.52

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Solution

The fourth proportional to 30,862.80, 42,590.16 and 16,715.52 is: 23,067.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,862.80 : 42,590.16 = 16,715.52 : x
  2. Step 2: Convert to fraction form
    30,862.80/42,590.16 = 16,715.52/x
  3. Step 3: Cross multiply
    30,862.80x = 42,590.16 × 16,715.52
  4. Step 4: Simplify right side
    30,862.80x = 711,916,671.28
  5. Step 5: Solve for x
    x = 711,916,671.28/30,862.80
  6. Step 6: Final answer
    x = 23,067.14

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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.