Home / 13,155.88-18,154.17-7,186.29

Finding the Fourth Proportional to 13,155.88, 18,154.17 and 7,186.29

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Solution

The fourth proportional to 13,155.88, 18,154.17 and 7,186.29 is: 9,916.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.88 : 18,154.17 = 7,186.29 : x
  2. Step 2: Convert to fraction form
    13,155.88/18,154.17 = 7,186.29/x
  3. Step 3: Cross multiply
    13,155.88x = 18,154.17 × 7,186.29
  4. Step 4: Simplify right side
    13,155.88x = 130,461,130.33
  5. Step 5: Solve for x
    x = 130,461,130.33/13,155.88
  6. Step 6: Final answer
    x = 9,916.56

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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.