Home / 19,865.56-29,778.18-12,475.24

Finding the Fourth Proportional to 19,865.56, 29,778.18 and 12,475.24

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Solution

The fourth proportional to 19,865.56, 29,778.18 and 12,475.24 is: 18,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865.56 : 29,778.18 = 12,475.24 : x
  2. Step 2: Convert to fraction form
    19,865.56/29,778.18 = 12,475.24/x
  3. Step 3: Cross multiply
    19,865.56x = 29,778.18 × 12,475.24
  4. Step 4: Simplify right side
    19,865.56x = 371,489,942.26
  5. Step 5: Solve for x
    x = 371,489,942.26/19,865.56
  6. Step 6: Final answer
    x = 18,700.20

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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.