Home / 13,395.17-18,443.19-11,374.59

Finding the Fourth Proportional to 13,395.17, 18,443.19 and 11,374.59

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Solution

The fourth proportional to 13,395.17, 18,443.19 and 11,374.59 is: 15,661.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.17 : 18,443.19 = 11,374.59 : x
  2. Step 2: Convert to fraction form
    13,395.17/18,443.19 = 11,374.59/x
  3. Step 3: Cross multiply
    13,395.17x = 18,443.19 × 11,374.59
  4. Step 4: Simplify right side
    13,395.17x = 209,783,836.36
  5. Step 5: Solve for x
    x = 209,783,836.36/13,395.17
  6. Step 6: Final answer
    x = 15,661.15

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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.