Home / 12,789.08-19,158.10-10,161.04

Finding the Fourth Proportional to 12,789.08, 19,158.10 and 10,161.04

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Solution

The fourth proportional to 12,789.08, 19,158.10 and 10,161.04 is: 15,221.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.08 : 19,158.10 = 10,161.04 : x
  2. Step 2: Convert to fraction form
    12,789.08/19,158.10 = 10,161.04/x
  3. Step 3: Cross multiply
    12,789.08x = 19,158.10 × 10,161.04
  4. Step 4: Simplify right side
    12,789.08x = 194,666,220.42
  5. Step 5: Solve for x
    x = 194,666,220.42/12,789.08
  6. Step 6: Final answer
    x = 15,221.28

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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.