Home / 13,612.65-20,386.16-7,751.49

Finding the Fourth Proportional to 13,612.65, 20,386.16 and 7,751.49

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Solution

The fourth proportional to 13,612.65, 20,386.16 and 7,751.49 is: 11,608.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.65 : 20,386.16 = 7,751.49 : x
  2. Step 2: Convert to fraction form
    13,612.65/20,386.16 = 7,751.49/x
  3. Step 3: Cross multiply
    13,612.65x = 20,386.16 × 7,751.49
  4. Step 4: Simplify right side
    13,612.65x = 158,023,115.38
  5. Step 5: Solve for x
    x = 158,023,115.38/13,612.65
  6. Step 6: Final answer
    x = 11,608.55

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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.