Home / 13,148.65-18,144.99-7,180.57

Finding the Fourth Proportional to 13,148.65, 18,144.99 and 7,180.57

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Solution

The fourth proportional to 13,148.65, 18,144.99 and 7,180.57 is: 9,909.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.65 : 18,144.99 = 7,180.57 : x
  2. Step 2: Convert to fraction form
    13,148.65/18,144.99 = 7,180.57/x
  3. Step 3: Cross multiply
    13,148.65x = 18,144.99 × 7,180.57
  4. Step 4: Simplify right side
    13,148.65x = 130,291,370.84
  5. Step 5: Solve for x
    x = 130,291,370.84/13,148.65
  6. Step 6: Final answer
    x = 9,909.11

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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.