Home / 31,639.80-47,459.70-8,268.60

Finding the Fourth Proportional to 31,639.80, 47,459.70 and 8,268.60

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Solution

The fourth proportional to 31,639.80, 47,459.70 and 8,268.60 is: 12,402.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,639.80 : 47,459.70 = 8,268.60 : x
  2. Step 2: Convert to fraction form
    31,639.80/47,459.70 = 8,268.60/x
  3. Step 3: Cross multiply
    31,639.80x = 47,459.70 × 8,268.60
  4. Step 4: Simplify right side
    31,639.80x = 392,425,275.42
  5. Step 5: Solve for x
    x = 392,425,275.42/31,639.80
  6. Step 6: Final answer
    x = 12,402.90

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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.