Home / 21,660.81-32,417.29-18,154.78

Finding the Fourth Proportional to 21,660.81, 32,417.29 and 18,154.78

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Solution

The fourth proportional to 21,660.81, 32,417.29 and 18,154.78 is: 27,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.81 : 32,417.29 = 18,154.78 : x
  2. Step 2: Convert to fraction form
    21,660.81/32,417.29 = 18,154.78/x
  3. Step 3: Cross multiply
    21,660.81x = 32,417.29 × 18,154.78
  4. Step 4: Simplify right side
    21,660.81x = 588,528,641.72
  5. Step 5: Solve for x
    x = 588,528,641.72/21,660.81
  6. Step 6: Final answer
    x = 27,170.20

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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.