Home / 21,330.32-29,437.09-12,374.55

Finding the Fourth Proportional to 21,330.32, 29,437.09 and 12,374.55

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Solution

The fourth proportional to 21,330.32, 29,437.09 and 12,374.55 is: 17,077.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.32 : 29,437.09 = 12,374.55 : x
  2. Step 2: Convert to fraction form
    21,330.32/29,437.09 = 12,374.55/x
  3. Step 3: Cross multiply
    21,330.32x = 29,437.09 × 12,374.55
  4. Step 4: Simplify right side
    21,330.32x = 364,270,711.12
  5. Step 5: Solve for x
    x = 364,270,711.12/21,330.32
  6. Step 6: Final answer
    x = 17,077.61

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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.