Home / 31,352.64-47,043.36-13,588.72

Finding the Fourth Proportional to 31,352.64, 47,043.36 and 13,588.72

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Solution

The fourth proportional to 31,352.64, 47,043.36 and 13,588.72 is: 20,389.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,352.64 : 47,043.36 = 13,588.72 : x
  2. Step 2: Convert to fraction form
    31,352.64/47,043.36 = 13,588.72/x
  3. Step 3: Cross multiply
    31,352.64x = 47,043.36 × 13,588.72
  4. Step 4: Simplify right side
    31,352.64x = 639,259,046.90
  5. Step 5: Solve for x
    x = 639,259,046.90/31,352.64
  6. Step 6: Final answer
    x = 20,389.32

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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.