Home / 31,421.64-47,121.30-10,356.60

Finding the Fourth Proportional to 31,421.64, 47,121.30 and 10,356.60

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Solution

The fourth proportional to 31,421.64, 47,121.30 and 10,356.60 is: 15,531.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.64 : 47,121.30 = 10,356.60 : x
  2. Step 2: Convert to fraction form
    31,421.64/47,121.30 = 10,356.60/x
  3. Step 3: Cross multiply
    31,421.64x = 47,121.30 × 10,356.60
  4. Step 4: Simplify right side
    31,421.64x = 488,016,455.58
  5. Step 5: Solve for x
    x = 488,016,455.58/31,421.64
  6. Step 6: Final answer
    x = 15,531.22

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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.