Home / 13,428.05-18,527.87-7,458.48

Finding the Fourth Proportional to 13,428.05, 18,527.87 and 7,458.48

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Solution

The fourth proportional to 13,428.05, 18,527.87 and 7,458.48 is: 10,291.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,428.05 : 18,527.87 = 7,458.48 : x
  2. Step 2: Convert to fraction form
    13,428.05/18,527.87 = 7,458.48/x
  3. Step 3: Cross multiply
    13,428.05x = 18,527.87 × 7,458.48
  4. Step 4: Simplify right side
    13,428.05x = 138,189,766.48
  5. Step 5: Solve for x
    x = 138,189,766.48/13,428.05
  6. Step 6: Final answer
    x = 10,291.13

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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.