Home / 13,531.86-18,671.75-12,443.14

Finding the Fourth Proportional to 13,531.86, 18,671.75 and 12,443.14

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Solution

The fourth proportional to 13,531.86, 18,671.75 and 12,443.14 is: 17,169.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,531.86 : 18,671.75 = 12,443.14 : x
  2. Step 2: Convert to fraction form
    13,531.86/18,671.75 = 12,443.14/x
  3. Step 3: Cross multiply
    13,531.86x = 18,671.75 × 12,443.14
  4. Step 4: Simplify right side
    13,531.86x = 232,335,259.60
  5. Step 5: Solve for x
    x = 232,335,259.60/13,531.86
  6. Step 6: Final answer
    x = 17,169.50

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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.