Home / 42,510.08-63,765.24-20,318.42

Finding the Fourth Proportional to 42,510.08, 63,765.24 and 20,318.42

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Solution

The fourth proportional to 42,510.08, 63,765.24 and 20,318.42 is: 30,477.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,510.08 : 63,765.24 = 20,318.42 : x
  2. Step 2: Convert to fraction form
    42,510.08/63,765.24 = 20,318.42/x
  3. Step 3: Cross multiply
    42,510.08x = 63,765.24 × 20,318.42
  4. Step 4: Simplify right side
    42,510.08x = 1,295,608,927.72
  5. Step 5: Solve for x
    x = 1,295,608,927.72/42,510.08
  6. Step 6: Final answer
    x = 30,477.69

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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.