Home / 42,490.18-63,742.62-12,911.02

Finding the Fourth Proportional to 42,490.18, 63,742.62 and 12,911.02

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Solution

The fourth proportional to 42,490.18, 63,742.62 and 12,911.02 is: 19,368.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,490.18 : 63,742.62 = 12,911.02 : x
  2. Step 2: Convert to fraction form
    42,490.18/63,742.62 = 12,911.02/x
  3. Step 3: Cross multiply
    42,490.18x = 63,742.62 × 12,911.02
  4. Step 4: Simplify right side
    42,490.18x = 822,982,241.67
  5. Step 5: Solve for x
    x = 822,982,241.67/42,490.18
  6. Step 6: Final answer
    x = 19,368.76

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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.