Home / 21,001.80-31,500.28-8,527.40

Finding the Fourth Proportional to 21,001.80, 31,500.28 and 8,527.40

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Solution

The fourth proportional to 21,001.80, 31,500.28 and 8,527.40 is: 12,790.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.80 : 31,500.28 = 8,527.40 : x
  2. Step 2: Convert to fraction form
    21,001.80/31,500.28 = 8,527.40/x
  3. Step 3: Cross multiply
    21,001.80x = 31,500.28 × 8,527.40
  4. Step 4: Simplify right side
    21,001.80x = 268,615,487.67
  5. Step 5: Solve for x
    x = 268,615,487.67/21,001.80
  6. Step 6: Final answer
    x = 12,790.12

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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.