Home / 15,543.42-21,442.55-10,509.38

Finding the Fourth Proportional to 15,543.42, 21,442.55 and 10,509.38

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Solution

The fourth proportional to 15,543.42, 21,442.55 and 10,509.38 is: 14,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.42 : 21,442.55 = 10,509.38 : x
  2. Step 2: Convert to fraction form
    15,543.42/21,442.55 = 10,509.38/x
  3. Step 3: Cross multiply
    15,543.42x = 21,442.55 × 10,509.38
  4. Step 4: Simplify right side
    15,543.42x = 225,347,906.12
  5. Step 5: Solve for x
    x = 225,347,906.12/15,543.42
  6. Step 6: Final answer
    x = 14,497.96

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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.