Home / 42,150.40-63,234.78-12,570.64

Finding the Fourth Proportional to 42,150.40, 63,234.78 and 12,570.64

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Solution

The fourth proportional to 42,150.40, 63,234.78 and 12,570.64 is: 18,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,150.40 : 63,234.78 = 12,570.64 : x
  2. Step 2: Convert to fraction form
    42,150.40/63,234.78 = 12,570.64/x
  3. Step 3: Cross multiply
    42,150.40x = 63,234.78 × 12,570.64
  4. Step 4: Simplify right side
    42,150.40x = 794,901,654.86
  5. Step 5: Solve for x
    x = 794,901,654.86/42,150.40
  6. Step 6: Final answer
    x = 18,858.70

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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.