Home / 31,979.20-44,130.20-17,639.60

Finding the Fourth Proportional to 31,979.20, 44,130.20 and 17,639.60

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Solution

The fourth proportional to 31,979.20, 44,130.20 and 17,639.60 is: 24,342.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,979.20 : 44,130.20 = 17,639.60 : x
  2. Step 2: Convert to fraction form
    31,979.20/44,130.20 = 17,639.60/x
  3. Step 3: Cross multiply
    31,979.20x = 44,130.20 × 17,639.60
  4. Step 4: Simplify right side
    31,979.20x = 778,438,899.37
  5. Step 5: Solve for x
    x = 778,438,899.37/31,979.20
  6. Step 6: Final answer
    x = 24,342.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.