Home / 42,659.20-63,988.20-19,285.60

Finding the Fourth Proportional to 42,659.20, 63,988.20 and 19,285.60

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Solution

The fourth proportional to 42,659.20, 63,988.20 and 19,285.60 is: 28,928.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,659.20 : 63,988.20 = 19,285.60 : x
  2. Step 2: Convert to fraction form
    42,659.20/63,988.20 = 19,285.60/x
  3. Step 3: Cross multiply
    42,659.20x = 63,988.20 × 19,285.60
  4. Step 4: Simplify right side
    42,659.20x = 1,234,050,829.92
  5. Step 5: Solve for x
    x = 1,234,050,829.92/42,659.20
  6. Step 6: Final answer
    x = 28,928.13

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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.