Home / 30,899.76-42,639.12-17,472.39

Finding the Fourth Proportional to 30,899.76, 42,639.12 and 17,472.39

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Solution

The fourth proportional to 30,899.76, 42,639.12 and 17,472.39 is: 24,110.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,899.76 : 42,639.12 = 17,472.39 : x
  2. Step 2: Convert to fraction form
    30,899.76/42,639.12 = 17,472.39/x
  3. Step 3: Cross multiply
    30,899.76x = 42,639.12 × 17,472.39
  4. Step 4: Simplify right side
    30,899.76x = 745,007,333.90
  5. Step 5: Solve for x
    x = 745,007,333.90/30,899.76
  6. Step 6: Final answer
    x = 24,110.46

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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.