Home / 21,414.40-32,130.60-12,043.12

Finding the Fourth Proportional to 21,414.40, 32,130.60 and 12,043.12

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Solution

The fourth proportional to 21,414.40, 32,130.60 and 12,043.12 is: 18,069.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,414.40 : 32,130.60 = 12,043.12 : x
  2. Step 2: Convert to fraction form
    21,414.40/32,130.60 = 12,043.12/x
  3. Step 3: Cross multiply
    21,414.40x = 32,130.60 × 12,043.12
  4. Step 4: Simplify right side
    21,414.40x = 386,952,671.47
  5. Step 5: Solve for x
    x = 386,952,671.47/21,414.40
  6. Step 6: Final answer
    x = 18,069.74

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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.