Home / 28,959.60-39,965.40-17,785.20

Finding the Fourth Proportional to 28,959.60, 39,965.40 and 17,785.20

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Solution

The fourth proportional to 28,959.60, 39,965.40 and 17,785.20 is: 24,544.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,959.60 : 39,965.40 = 17,785.20 : x
  2. Step 2: Convert to fraction form
    28,959.60/39,965.40 = 17,785.20/x
  3. Step 3: Cross multiply
    28,959.60x = 39,965.40 × 17,785.20
  4. Step 4: Simplify right side
    28,959.60x = 710,792,632.08
  5. Step 5: Solve for x
    x = 710,792,632.08/28,959.60
  6. Step 6: Final answer
    x = 24,544.28

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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.