Home / 21,421.31-32,076.61-14,778.29

Finding the Fourth Proportional to 21,421.31, 32,076.61 and 14,778.29

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Solution

The fourth proportional to 21,421.31, 32,076.61 and 14,778.29 is: 22,129.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.31 : 32,076.61 = 14,778.29 : x
  2. Step 2: Convert to fraction form
    21,421.31/32,076.61 = 14,778.29/x
  3. Step 3: Cross multiply
    21,421.31x = 32,076.61 × 14,778.29
  4. Step 4: Simplify right side
    21,421.31x = 474,037,488.04
  5. Step 5: Solve for x
    x = 474,037,488.04/21,421.31
  6. Step 6: Final answer
    x = 22,129.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.