Home / 13,519.55-18,657.51-7,854.23

Finding the Fourth Proportional to 13,519.55, 18,657.51 and 7,854.23

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Solution

The fourth proportional to 13,519.55, 18,657.51 and 7,854.23 is: 10,839.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.55 : 18,657.51 = 7,854.23 : x
  2. Step 2: Convert to fraction form
    13,519.55/18,657.51 = 7,854.23/x
  3. Step 3: Cross multiply
    13,519.55x = 18,657.51 × 7,854.23
  4. Step 4: Simplify right side
    13,519.55x = 146,540,374.77
  5. Step 5: Solve for x
    x = 146,540,374.77/13,519.55
  6. Step 6: Final answer
    x = 10,839.15

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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.