Home / 42,521.10-63,742.28-18,816.08

Finding the Fourth Proportional to 42,521.10, 63,742.28 and 18,816.08

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Solution

The fourth proportional to 42,521.10, 63,742.28 and 18,816.08 is: 28,206.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,521.10 : 63,742.28 = 18,816.08 : x
  2. Step 2: Convert to fraction form
    42,521.10/63,742.28 = 18,816.08/x
  3. Step 3: Cross multiply
    42,521.10x = 63,742.28 × 18,816.08
  4. Step 4: Simplify right side
    42,521.10x = 1,199,379,839.86
  5. Step 5: Solve for x
    x = 1,199,379,839.86/42,521.10
  6. Step 6: Final answer
    x = 28,206.70

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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.