Home / 11,387.04-17,080.55-3,987.45

Finding the Fourth Proportional to 11,387.04, 17,080.55 and 3,987.45

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Solution

The fourth proportional to 11,387.04, 17,080.55 and 3,987.45 is: 5,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,387.04 : 17,080.55 = 3,987.45 : x
  2. Step 2: Convert to fraction form
    11,387.04/17,080.55 = 3,987.45/x
  3. Step 3: Cross multiply
    11,387.04x = 17,080.55 × 3,987.45
  4. Step 4: Simplify right side
    11,387.04x = 68,107,839.10
  5. Step 5: Solve for x
    x = 68,107,839.10/11,387.04
  6. Step 6: Final answer
    x = 5,981.17

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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.