Home / 18,729.92-28,071.28-16,384.36

Finding the Fourth Proportional to 18,729.92, 28,071.28 and 16,384.36

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Solution

The fourth proportional to 18,729.92, 28,071.28 and 16,384.36 is: 24,555.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.92 : 28,071.28 = 16,384.36 : x
  2. Step 2: Convert to fraction form
    18,729.92/28,071.28 = 16,384.36/x
  3. Step 3: Cross multiply
    18,729.92x = 28,071.28 × 16,384.36
  4. Step 4: Simplify right side
    18,729.92x = 459,929,957.18
  5. Step 5: Solve for x
    x = 459,929,957.18/18,729.92
  6. Step 6: Final answer
    x = 24,555.90

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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.