Home / 42,420.15-63,631.13-12,837.93

Finding the Fourth Proportional to 42,420.15, 63,631.13 and 12,837.93

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Solution

The fourth proportional to 42,420.15, 63,631.13 and 12,837.93 is: 19,257.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.15 : 63,631.13 = 12,837.93 : x
  2. Step 2: Convert to fraction form
    42,420.15/63,631.13 = 12,837.93/x
  3. Step 3: Cross multiply
    42,420.15x = 63,631.13 × 12,837.93
  4. Step 4: Simplify right side
    42,420.15x = 816,891,928.57
  5. Step 5: Solve for x
    x = 816,891,928.57/42,420.15
  6. Step 6: Final answer
    x = 19,257.17

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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.