Home / 42,478.14-63,677.40-14,378.53

Finding the Fourth Proportional to 42,478.14, 63,677.40 and 14,378.53

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Solution

The fourth proportional to 42,478.14, 63,677.40 and 14,378.53 is: 21,554.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,478.14 : 63,677.40 = 14,378.53 : x
  2. Step 2: Convert to fraction form
    42,478.14/63,677.40 = 14,378.53/x
  3. Step 3: Cross multiply
    42,478.14x = 63,677.40 × 14,378.53
  4. Step 4: Simplify right side
    42,478.14x = 915,587,406.22
  5. Step 5: Solve for x
    x = 915,587,406.22/42,478.14
  6. Step 6: Final answer
    x = 21,554.32

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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.