Home / 12,340.13-18,512.55-5,320.13

Finding the Fourth Proportional to 12,340.13, 18,512.55 and 5,320.13

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Solution

The fourth proportional to 12,340.13, 18,512.55 and 5,320.13 is: 7,981.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,340.13 : 18,512.55 = 5,320.13 : x
  2. Step 2: Convert to fraction form
    12,340.13/18,512.55 = 5,320.13/x
  3. Step 3: Cross multiply
    12,340.13x = 18,512.55 × 5,320.13
  4. Step 4: Simplify right side
    12,340.13x = 98,489,080.07
  5. Step 5: Solve for x
    x = 98,489,080.07/12,340.13
  6. Step 6: Final answer
    x = 7,981.21

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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.