Home / 28,587.76-39,414.60-18,498.40

Finding the Fourth Proportional to 28,587.76, 39,414.60 and 18,498.40

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Solution

The fourth proportional to 28,587.76, 39,414.60 and 18,498.40 is: 25,504.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,587.76 : 39,414.60 = 18,498.40 : x
  2. Step 2: Convert to fraction form
    28,587.76/39,414.60 = 18,498.40/x
  3. Step 3: Cross multiply
    28,587.76x = 39,414.60 × 18,498.40
  4. Step 4: Simplify right side
    28,587.76x = 729,107,036.64
  5. Step 5: Solve for x
    x = 729,107,036.64/28,587.76
  6. Step 6: Final answer
    x = 25,504.17

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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.