Home / 28,223.20-42,329.40-8,502.40

Finding the Fourth Proportional to 28,223.20, 42,329.40 and 8,502.40

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Solution

The fourth proportional to 28,223.20, 42,329.40 and 8,502.40 is: 12,751.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.20 : 42,329.40 = 8,502.40 : x
  2. Step 2: Convert to fraction form
    28,223.20/42,329.40 = 8,502.40/x
  3. Step 3: Cross multiply
    28,223.20x = 42,329.40 × 8,502.40
  4. Step 4: Simplify right side
    28,223.20x = 359,901,490.56
  5. Step 5: Solve for x
    x = 359,901,490.56/28,223.20
  6. Step 6: Final answer
    x = 12,751.97

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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.