Home / 31,535.76-47,282.16-15,720.72

Finding the Fourth Proportional to 31,535.76, 47,282.16 and 15,720.72

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Solution

The fourth proportional to 31,535.76, 47,282.16 and 15,720.72 is: 23,570.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,535.76 : 47,282.16 = 15,720.72 : x
  2. Step 2: Convert to fraction form
    31,535.76/47,282.16 = 15,720.72/x
  3. Step 3: Cross multiply
    31,535.76x = 47,282.16 × 15,720.72
  4. Step 4: Simplify right side
    31,535.76x = 743,309,598.36
  5. Step 5: Solve for x
    x = 743,309,598.36/31,535.76
  6. Step 6: Final answer
    x = 23,570.37

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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.