Home / 13,449.18-20,140.86-11,612.10

Finding the Fourth Proportional to 13,449.18, 20,140.86 and 11,612.10

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Solution

The fourth proportional to 13,449.18, 20,140.86 and 11,612.10 is: 17,389.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.18 : 20,140.86 = 11,612.10 : x
  2. Step 2: Convert to fraction form
    13,449.18/20,140.86 = 11,612.10/x
  3. Step 3: Cross multiply
    13,449.18x = 20,140.86 × 11,612.10
  4. Step 4: Simplify right side
    13,449.18x = 233,877,680.41
  5. Step 5: Solve for x
    x = 233,877,680.41/13,449.18
  6. Step 6: Final answer
    x = 17,389.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.