Home / 42,465.38-63,707.88-12,480.06

Finding the Fourth Proportional to 42,465.38, 63,707.88 and 12,480.06

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Solution

The fourth proportional to 42,465.38, 63,707.88 and 12,480.06 is: 18,722.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,465.38 : 63,707.88 = 12,480.06 : x
  2. Step 2: Convert to fraction form
    42,465.38/63,707.88 = 12,480.06/x
  3. Step 3: Cross multiply
    42,465.38x = 63,707.88 × 12,480.06
  4. Step 4: Simplify right side
    42,465.38x = 795,078,164.87
  5. Step 5: Solve for x
    x = 795,078,164.87/42,465.38
  6. Step 6: Final answer
    x = 18,722.98

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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.