Home / 13,439.88-18,541.92-9,911.52

Finding the Fourth Proportional to 13,439.88, 18,541.92 and 9,911.52

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Solution

The fourth proportional to 13,439.88, 18,541.92 and 9,911.52 is: 13,674.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,439.88 : 18,541.92 = 9,911.52 : x
  2. Step 2: Convert to fraction form
    13,439.88/18,541.92 = 9,911.52/x
  3. Step 3: Cross multiply
    13,439.88x = 18,541.92 × 9,911.52
  4. Step 4: Simplify right side
    13,439.88x = 183,778,610.92
  5. Step 5: Solve for x
    x = 183,778,610.92/13,439.88
  6. Step 6: Final answer
    x = 13,674.13

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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.