Home / 15,543.43-21,452.74-9,169.65

Finding the Fourth Proportional to 15,543.43, 21,452.74 and 9,169.65

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Solution

The fourth proportional to 15,543.43, 21,452.74 and 9,169.65 is: 12,655.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.43 : 21,452.74 = 9,169.65 : x
  2. Step 2: Convert to fraction form
    15,543.43/21,452.74 = 9,169.65/x
  3. Step 3: Cross multiply
    15,543.43x = 21,452.74 × 9,169.65
  4. Step 4: Simplify right side
    15,543.43x = 196,714,094.42
  5. Step 5: Solve for x
    x = 196,714,094.42/15,543.43
  6. Step 6: Final answer
    x = 12,655.77

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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.