Home / 20,695.24-31,057.90-15,515.08

Finding the Fourth Proportional to 20,695.24, 31,057.90 and 15,515.08

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Solution

The fourth proportional to 20,695.24, 31,057.90 and 15,515.08 is: 23,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.24 : 31,057.90 = 15,515.08 : x
  2. Step 2: Convert to fraction form
    20,695.24/31,057.90 = 15,515.08/x
  3. Step 3: Cross multiply
    20,695.24x = 31,057.90 × 15,515.08
  4. Step 4: Simplify right side
    20,695.24x = 481,865,803.13
  5. Step 5: Solve for x
    x = 481,865,803.13/20,695.24
  6. Step 6: Final answer
    x = 23,283.90

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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.