Home / 28,488.52-39,295.86-18,928.20

Finding the Fourth Proportional to 28,488.52, 39,295.86 and 18,928.20

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Solution

The fourth proportional to 28,488.52, 39,295.86 and 18,928.20 is: 26,108.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.52 : 39,295.86 = 18,928.20 : x
  2. Step 2: Convert to fraction form
    28,488.52/39,295.86 = 18,928.20/x
  3. Step 3: Cross multiply
    28,488.52x = 39,295.86 × 18,928.20
  4. Step 4: Simplify right side
    28,488.52x = 743,799,897.25
  5. Step 5: Solve for x
    x = 743,799,897.25/28,488.52
  6. Step 6: Final answer
    x = 26,108.76

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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.