Home / 15,117.57-22,678.70-7,718.03

Finding the Fourth Proportional to 15,117.57, 22,678.70 and 7,718.03

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Solution

The fourth proportional to 15,117.57, 22,678.70 and 7,718.03 is: 11,578.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.57 : 22,678.70 = 7,718.03 : x
  2. Step 2: Convert to fraction form
    15,117.57/22,678.70 = 7,718.03/x
  3. Step 3: Cross multiply
    15,117.57x = 22,678.70 × 7,718.03
  4. Step 4: Simplify right side
    15,117.57x = 175,034,792.86
  5. Step 5: Solve for x
    x = 175,034,792.86/15,117.57
  6. Step 6: Final answer
    x = 11,578.24

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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.