Home / 28,370.20-42,555.30-18,528.70

Finding the Fourth Proportional to 28,370.20, 42,555.30 and 18,528.70

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Solution

The fourth proportional to 28,370.20, 42,555.30 and 18,528.70 is: 27,793.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.20 : 42,555.30 = 18,528.70 : x
  2. Step 2: Convert to fraction form
    28,370.20/42,555.30 = 18,528.70/x
  3. Step 3: Cross multiply
    28,370.20x = 42,555.30 × 18,528.70
  4. Step 4: Simplify right side
    28,370.20x = 788,494,387.11
  5. Step 5: Solve for x
    x = 788,494,387.11/28,370.20
  6. Step 6: Final answer
    x = 27,793.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.