Home / 42,280.08-63,431.16-12,697.20

Finding the Fourth Proportional to 42,280.08, 63,431.16 and 12,697.20

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Solution

The fourth proportional to 42,280.08, 63,431.16 and 12,697.20 is: 19,049.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,280.08 : 63,431.16 = 12,697.20 : x
  2. Step 2: Convert to fraction form
    42,280.08/63,431.16 = 12,697.20/x
  3. Step 3: Cross multiply
    42,280.08x = 63,431.16 × 12,697.20
  4. Step 4: Simplify right side
    42,280.08x = 805,398,124.75
  5. Step 5: Solve for x
    x = 805,398,124.75/42,280.08
  6. Step 6: Final answer
    x = 19,049.12

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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.