Home / 42,700.14-63,964.32-21,288.24

Finding the Fourth Proportional to 42,700.14, 63,964.32 and 21,288.24

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Solution

The fourth proportional to 42,700.14, 63,964.32 and 21,288.24 is: 31,889.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,700.14 : 63,964.32 = 21,288.24 : x
  2. Step 2: Convert to fraction form
    42,700.14/63,964.32 = 21,288.24/x
  3. Step 3: Cross multiply
    42,700.14x = 63,964.32 × 21,288.24
  4. Step 4: Simplify right side
    42,700.14x = 1,361,687,795.60
  5. Step 5: Solve for x
    x = 1,361,687,795.60/42,700.14
  6. Step 6: Final answer
    x = 31,889.54

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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.