Home / 13,074.18-18,040.02-7,770.30

Finding the Fourth Proportional to 13,074.18, 18,040.02 and 7,770.30

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Solution

The fourth proportional to 13,074.18, 18,040.02 and 7,770.30 is: 10,721.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.18 : 18,040.02 = 7,770.30 : x
  2. Step 2: Convert to fraction form
    13,074.18/18,040.02 = 7,770.30/x
  3. Step 3: Cross multiply
    13,074.18x = 18,040.02 × 7,770.30
  4. Step 4: Simplify right side
    13,074.18x = 140,176,367.41
  5. Step 5: Solve for x
    x = 140,176,367.41/13,074.18
  6. Step 6: Final answer
    x = 10,721.62

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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.