Home / 20,387.34-30,581.04-16,420.02

Finding the Fourth Proportional to 20,387.34, 30,581.04 and 16,420.02

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Solution

The fourth proportional to 20,387.34, 30,581.04 and 16,420.02 is: 24,630.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.34 : 30,581.04 = 16,420.02 : x
  2. Step 2: Convert to fraction form
    20,387.34/30,581.04 = 16,420.02/x
  3. Step 3: Cross multiply
    20,387.34x = 30,581.04 × 16,420.02
  4. Step 4: Simplify right side
    20,387.34x = 502,141,288.42
  5. Step 5: Solve for x
    x = 502,141,288.42/20,387.34
  6. Step 6: Final answer
    x = 24,630.05

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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.