Home / 21,429.90-32,112.45-18,125.10

Finding the Fourth Proportional to 21,429.90, 32,112.45 and 18,125.10

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Solution

The fourth proportional to 21,429.90, 32,112.45 and 18,125.10 is: 27,160.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.90 : 32,112.45 = 18,125.10 : x
  2. Step 2: Convert to fraction form
    21,429.90/32,112.45 = 18,125.10/x
  3. Step 3: Cross multiply
    21,429.90x = 32,112.45 × 18,125.10
  4. Step 4: Simplify right side
    21,429.90x = 582,041,367.50
  5. Step 5: Solve for x
    x = 582,041,367.50/21,429.90
  6. Step 6: Final answer
    x = 27,160.25

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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.