Home / 31,422.79-47,116.36-10,357.12

Finding the Fourth Proportional to 31,422.79, 47,116.36 and 10,357.12

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Solution

The fourth proportional to 31,422.79, 47,116.36 and 10,357.12 is: 15,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,422.79 : 47,116.36 = 10,357.12 : x
  2. Step 2: Convert to fraction form
    31,422.79/47,116.36 = 10,357.12/x
  3. Step 3: Cross multiply
    31,422.79x = 47,116.36 × 10,357.12
  4. Step 4: Simplify right side
    31,422.79x = 487,989,794.48
  5. Step 5: Solve for x
    x = 487,989,794.48/31,422.79
  6. Step 6: Final answer
    x = 15,529.80

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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.