Home / 28,580.48-39,377.56-18,872.70

Finding the Fourth Proportional to 28,580.48, 39,377.56 and 18,872.70

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Solution

The fourth proportional to 28,580.48, 39,377.56 and 18,872.70 is: 26,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.48 : 39,377.56 = 18,872.70 : x
  2. Step 2: Convert to fraction form
    28,580.48/39,377.56 = 18,872.70/x
  3. Step 3: Cross multiply
    28,580.48x = 39,377.56 × 18,872.70
  4. Step 4: Simplify right side
    28,580.48x = 743,160,762.12
  5. Step 5: Solve for x
    x = 743,160,762.12/28,580.48
  6. Step 6: Final answer
    x = 26,002.39

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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.