Home / 21,387.16-32,018.19-12,475.24

Finding the Fourth Proportional to 21,387.16, 32,018.19 and 12,475.24

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Solution

The fourth proportional to 21,387.16, 32,018.19 and 12,475.24 is: 18,676.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,387.16 : 32,018.19 = 12,475.24 : x
  2. Step 2: Convert to fraction form
    21,387.16/32,018.19 = 12,475.24/x
  3. Step 3: Cross multiply
    21,387.16x = 32,018.19 × 12,475.24
  4. Step 4: Simplify right side
    21,387.16x = 399,434,604.62
  5. Step 5: Solve for x
    x = 399,434,604.62/21,387.16
  6. Step 6: Final answer
    x = 18,676.37

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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.