Home / 42,486.05-63,724.93-12,904.13

Finding the Fourth Proportional to 42,486.05, 63,724.93 and 12,904.13

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Solution

The fourth proportional to 42,486.05, 63,724.93 and 12,904.13 is: 19,354.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,486.05 : 63,724.93 = 12,904.13 : x
  2. Step 2: Convert to fraction form
    42,486.05/63,724.93 = 12,904.13/x
  3. Step 3: Cross multiply
    42,486.05x = 63,724.93 × 12,904.13
  4. Step 4: Simplify right side
    42,486.05x = 822,314,780.96
  5. Step 5: Solve for x
    x = 822,314,780.96/42,486.05
  6. Step 6: Final answer
    x = 19,354.94

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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.