Home / 20,728.04-31,101.24-10,864.96

Finding the Fourth Proportional to 20,728.04, 31,101.24 and 10,864.96

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Solution

The fourth proportional to 20,728.04, 31,101.24 and 10,864.96 is: 16,302.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.04 : 31,101.24 = 10,864.96 : x
  2. Step 2: Convert to fraction form
    20,728.04/31,101.24 = 10,864.96/x
  3. Step 3: Cross multiply
    20,728.04x = 31,101.24 × 10,864.96
  4. Step 4: Simplify right side
    20,728.04x = 337,913,728.55
  5. Step 5: Solve for x
    x = 337,913,728.55/20,728.04
  6. Step 6: Final answer
    x = 16,302.25

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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.