Home / 21,432.57-29,575.67-11,740.09

Finding the Fourth Proportional to 21,432.57, 29,575.67 and 11,740.09

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Solution

The fourth proportional to 21,432.57, 29,575.67 and 11,740.09 is: 16,200.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.57 : 29,575.67 = 11,740.09 : x
  2. Step 2: Convert to fraction form
    21,432.57/29,575.67 = 11,740.09/x
  3. Step 3: Cross multiply
    21,432.57x = 29,575.67 × 11,740.09
  4. Step 4: Simplify right side
    21,432.57x = 347,221,184.31
  5. Step 5: Solve for x
    x = 347,221,184.31/21,432.57
  6. Step 6: Final answer
    x = 16,200.64

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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.