Home / 11,445.80-17,136.30-10,279.40

Finding the Fourth Proportional to 11,445.80, 17,136.30 and 10,279.40

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Solution

The fourth proportional to 11,445.80, 17,136.30 and 10,279.40 is: 15,390.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,445.80 : 17,136.30 = 10,279.40 : x
  2. Step 2: Convert to fraction form
    11,445.80/17,136.30 = 10,279.40/x
  3. Step 3: Cross multiply
    11,445.80x = 17,136.30 × 10,279.40
  4. Step 4: Simplify right side
    11,445.80x = 176,150,882.22
  5. Step 5: Solve for x
    x = 176,150,882.22/11,445.80
  6. Step 6: Final answer
    x = 15,390.00

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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.