Home / 31,628.40-47,442.60-17,631.60

Finding the Fourth Proportional to 31,628.40, 47,442.60 and 17,631.60

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Solution

The fourth proportional to 31,628.40, 47,442.60 and 17,631.60 is: 26,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,628.40 : 47,442.60 = 17,631.60 : x
  2. Step 2: Convert to fraction form
    31,628.40/47,442.60 = 17,631.60/x
  3. Step 3: Cross multiply
    31,628.40x = 47,442.60 × 17,631.60
  4. Step 4: Simplify right side
    31,628.40x = 836,488,946.16
  5. Step 5: Solve for x
    x = 836,488,946.16/31,628.40
  6. Step 6: Final answer
    x = 26,447.40

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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.