Home / 20,276.13-28,000.29-19,171.68

Finding the Fourth Proportional to 20,276.13, 28,000.29 and 19,171.68

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Solution

The fourth proportional to 20,276.13, 28,000.29 and 19,171.68 is: 26,475.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.13 : 28,000.29 = 19,171.68 : x
  2. Step 2: Convert to fraction form
    20,276.13/28,000.29 = 19,171.68/x
  3. Step 3: Cross multiply
    20,276.13x = 28,000.29 × 19,171.68
  4. Step 4: Simplify right side
    20,276.13x = 536,812,599.79
  5. Step 5: Solve for x
    x = 536,812,599.79/20,276.13
  6. Step 6: Final answer
    x = 26,475.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.