Home / 13,431.30-18,534.87-7,462.68

Finding the Fourth Proportional to 13,431.30, 18,534.87 and 7,462.68

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Solution

The fourth proportional to 13,431.30, 18,534.87 and 7,462.68 is: 10,298.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.30 : 18,534.87 = 7,462.68 : x
  2. Step 2: Convert to fraction form
    13,431.30/18,534.87 = 7,462.68/x
  3. Step 3: Cross multiply
    13,431.30x = 18,534.87 × 7,462.68
  4. Step 4: Simplify right side
    13,431.30x = 138,319,803.65
  5. Step 5: Solve for x
    x = 138,319,803.65/13,431.30
  6. Step 6: Final answer
    x = 10,298.32

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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.