Home / 42,020.75-63,008.85-12,434.51

Finding the Fourth Proportional to 42,020.75, 63,008.85 and 12,434.51

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Solution

The fourth proportional to 42,020.75, 63,008.85 and 12,434.51 is: 18,645.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,020.75 : 63,008.85 = 12,434.51 : x
  2. Step 2: Convert to fraction form
    42,020.75/63,008.85 = 12,434.51/x
  3. Step 3: Cross multiply
    42,020.75x = 63,008.85 × 12,434.51
  4. Step 4: Simplify right side
    42,020.75x = 783,484,175.41
  5. Step 5: Solve for x
    x = 783,484,175.41/42,020.75
  6. Step 6: Final answer
    x = 18,645.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.