Home / 21,125.42-29,152.64-11,565.08

Finding the Fourth Proportional to 21,125.42, 29,152.64 and 11,565.08

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Solution

The fourth proportional to 21,125.42, 29,152.64 and 11,565.08 is: 15,959.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,125.42 : 29,152.64 = 11,565.08 : x
  2. Step 2: Convert to fraction form
    21,125.42/29,152.64 = 11,565.08/x
  3. Step 3: Cross multiply
    21,125.42x = 29,152.64 × 11,565.08
  4. Step 4: Simplify right side
    21,125.42x = 337,152,606.28
  5. Step 5: Solve for x
    x = 337,152,606.28/21,125.42
  6. Step 6: Final answer
    x = 15,959.57

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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.