Home / 12,519.40-18,744.54-7,316.20

Finding the Fourth Proportional to 12,519.40, 18,744.54 and 7,316.20

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Solution

The fourth proportional to 12,519.40, 18,744.54 and 7,316.20 is: 10,954.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.40 : 18,744.54 = 7,316.20 : x
  2. Step 2: Convert to fraction form
    12,519.40/18,744.54 = 7,316.20/x
  3. Step 3: Cross multiply
    12,519.40x = 18,744.54 × 7,316.20
  4. Step 4: Simplify right side
    12,519.40x = 137,138,803.55
  5. Step 5: Solve for x
    x = 137,138,803.55/12,519.40
  6. Step 6: Final answer
    x = 10,954.10

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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.