Home / 28,572.57-39,423.78-17,243.91

Finding the Fourth Proportional to 28,572.57, 39,423.78 and 17,243.91

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Solution

The fourth proportional to 28,572.57, 39,423.78 and 17,243.91 is: 23,792.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.57 : 39,423.78 = 17,243.91 : x
  2. Step 2: Convert to fraction form
    28,572.57/39,423.78 = 17,243.91/x
  3. Step 3: Cross multiply
    28,572.57x = 39,423.78 × 17,243.91
  4. Step 4: Simplify right side
    28,572.57x = 679,820,114.18
  5. Step 5: Solve for x
    x = 679,820,114.18/28,572.57
  6. Step 6: Final answer
    x = 23,792.75

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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.