Home / 31,979.60-47,969.51-9,792.89

Finding the Fourth Proportional to 31,979.60, 47,969.51 and 9,792.89

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Solution

The fourth proportional to 31,979.60, 47,969.51 and 9,792.89 is: 14,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.60 : 47,969.51 = 9,792.89 : x
  2. Step 2: Convert to fraction form
    31,979.60/47,969.51 = 9,792.89/x
  3. Step 3: Cross multiply
    31,979.60x = 47,969.51 × 9,792.89
  4. Step 4: Simplify right side
    31,979.60x = 469,759,919.42
  5. Step 5: Solve for x
    x = 469,759,919.42/31,979.60
  6. Step 6: Final answer
    x = 14,689.36

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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.