Home / 16,405.28-22,638.12-12,876.92

Finding the Fourth Proportional to 16,405.28, 22,638.12 and 12,876.92

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Solution

The fourth proportional to 16,405.28, 22,638.12 and 12,876.92 is: 17,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,405.28 : 22,638.12 = 12,876.92 : x
  2. Step 2: Convert to fraction form
    16,405.28/22,638.12 = 12,876.92/x
  3. Step 3: Cross multiply
    16,405.28x = 22,638.12 × 12,876.92
  4. Step 4: Simplify right side
    16,405.28x = 291,509,260.19
  5. Step 5: Solve for x
    x = 291,509,260.19/16,405.28
  6. Step 6: Final answer
    x = 17,769.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.