Home / 21,729.60-32,545.80-16,772.40

Finding the Fourth Proportional to 21,729.60, 32,545.80 and 16,772.40

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Solution

The fourth proportional to 21,729.60, 32,545.80 and 16,772.40 is: 25,121.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.60 : 32,545.80 = 16,772.40 : x
  2. Step 2: Convert to fraction form
    21,729.60/32,545.80 = 16,772.40/x
  3. Step 3: Cross multiply
    21,729.60x = 32,545.80 × 16,772.40
  4. Step 4: Simplify right side
    21,729.60x = 545,871,175.92
  5. Step 5: Solve for x
    x = 545,871,175.92/21,729.60
  6. Step 6: Final answer
    x = 25,121.09

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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.