Home / 13,154.47-18,154.42-7,187.04

Finding the Fourth Proportional to 13,154.47, 18,154.42 and 7,187.04

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Solution

The fourth proportional to 13,154.47, 18,154.42 and 7,187.04 is: 9,918.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.47 : 18,154.42 = 7,187.04 : x
  2. Step 2: Convert to fraction form
    13,154.47/18,154.42 = 7,187.04/x
  3. Step 3: Cross multiply
    13,154.47x = 18,154.42 × 7,187.04
  4. Step 4: Simplify right side
    13,154.47x = 130,476,416.01
  5. Step 5: Solve for x
    x = 130,476,416.01/13,154.47
  6. Step 6: Final answer
    x = 9,918.79

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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.