Home / 42,405.38-63,615.40-14,325.64

Finding the Fourth Proportional to 42,405.38, 63,615.40 and 14,325.64

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Solution

The fourth proportional to 42,405.38, 63,615.40 and 14,325.64 is: 21,490.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,405.38 : 63,615.40 = 14,325.64 : x
  2. Step 2: Convert to fraction form
    42,405.38/63,615.40 = 14,325.64/x
  3. Step 3: Cross multiply
    42,405.38x = 63,615.40 × 14,325.64
  4. Step 4: Simplify right side
    42,405.38x = 911,331,318.86
  5. Step 5: Solve for x
    x = 911,331,318.86/42,405.38
  6. Step 6: Final answer
    x = 21,490.94

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1.5x scale

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.