Home / 13,182.21-18,161.15-12,560.13

Finding the Fourth Proportional to 13,182.21, 18,161.15 and 12,560.13

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Solution

The fourth proportional to 13,182.21, 18,161.15 and 12,560.13 is: 17,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,182.21 : 18,161.15 = 12,560.13 : x
  2. Step 2: Convert to fraction form
    13,182.21/18,161.15 = 12,560.13/x
  3. Step 3: Cross multiply
    13,182.21x = 18,161.15 × 12,560.13
  4. Step 4: Simplify right side
    13,182.21x = 228,106,342.15
  5. Step 5: Solve for x
    x = 228,106,342.15/13,182.21
  6. Step 6: Final answer
    x = 17,304.10

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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.