Home / 31,422.42-47,132.40-10,645.92

Finding the Fourth Proportional to 31,422.42, 47,132.40 and 10,645.92

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Solution

The fourth proportional to 31,422.42, 47,132.40 and 10,645.92 is: 15,968.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,422.42 : 47,132.40 = 10,645.92 : x
  2. Step 2: Convert to fraction form
    31,422.42/47,132.40 = 10,645.92/x
  3. Step 3: Cross multiply
    31,422.42x = 47,132.40 × 10,645.92
  4. Step 4: Simplify right side
    31,422.42x = 501,767,759.81
  5. Step 5: Solve for x
    x = 501,767,759.81/31,422.42
  6. Step 6: Final answer
    x = 15,968.46

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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.