Home / 42,390.60-63,586.38-12,808.68

Finding the Fourth Proportional to 42,390.60, 63,586.38 and 12,808.68

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Solution

The fourth proportional to 42,390.60, 63,586.38 and 12,808.68 is: 19,213.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,390.60 : 63,586.38 = 12,808.68 : x
  2. Step 2: Convert to fraction form
    42,390.60/63,586.38 = 12,808.68/x
  3. Step 3: Cross multiply
    42,390.60x = 63,586.38 × 12,808.68
  4. Step 4: Simplify right side
    42,390.60x = 814,457,593.78
  5. Step 5: Solve for x
    x = 814,457,593.78/42,390.60
  6. Step 6: Final answer
    x = 19,213.17

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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.