Home / 13,612.74-18,776.25-11,374.71

Finding the Fourth Proportional to 13,612.74, 18,776.25 and 11,374.71

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Solution

The fourth proportional to 13,612.74, 18,776.25 and 11,374.71 is: 15,689.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.74 : 18,776.25 = 11,374.71 : x
  2. Step 2: Convert to fraction form
    13,612.74/18,776.25 = 11,374.71/x
  3. Step 3: Cross multiply
    13,612.74x = 18,776.25 × 11,374.71
  4. Step 4: Simplify right side
    13,612.74x = 213,574,398.64
  5. Step 5: Solve for x
    x = 213,574,398.64/13,612.74
  6. Step 6: Final answer
    x = 15,689.30

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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.