Home / 28,820.52-39,778.50-18,203.40

Finding the Fourth Proportional to 28,820.52, 39,778.50 and 18,203.40

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Solution

The fourth proportional to 28,820.52, 39,778.50 and 18,203.40 is: 25,124.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.52 : 39,778.50 = 18,203.40 : x
  2. Step 2: Convert to fraction form
    28,820.52/39,778.50 = 18,203.40/x
  3. Step 3: Cross multiply
    28,820.52x = 39,778.50 × 18,203.40
  4. Step 4: Simplify right side
    28,820.52x = 724,103,946.90
  5. Step 5: Solve for x
    x = 724,103,946.90/28,820.52
  6. Step 6: Final answer
    x = 25,124.60

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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.