Home / 13,154.93-18,154.24-7,187.15

Finding the Fourth Proportional to 13,154.93, 18,154.24 and 7,187.15

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Solution

The fourth proportional to 13,154.93, 18,154.24 and 7,187.15 is: 9,918.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.93 : 18,154.24 = 7,187.15 : x
  2. Step 2: Convert to fraction form
    13,154.93/18,154.24 = 7,187.15/x
  3. Step 3: Cross multiply
    13,154.93x = 18,154.24 × 7,187.15
  4. Step 4: Simplify right side
    13,154.93x = 130,477,246.02
  5. Step 5: Solve for x
    x = 130,477,246.02/13,154.93
  6. Step 6: Final answer
    x = 9,918.51

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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.