Home / 13,247.95-18,290.20-8,775.54

Finding the Fourth Proportional to 13,247.95, 18,290.20 and 8,775.54

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Solution

The fourth proportional to 13,247.95, 18,290.20 and 8,775.54 is: 12,115.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.95 : 18,290.20 = 8,775.54 : x
  2. Step 2: Convert to fraction form
    13,247.95/18,290.20 = 8,775.54/x
  3. Step 3: Cross multiply
    13,247.95x = 18,290.20 × 8,775.54
  4. Step 4: Simplify right side
    13,247.95x = 160,506,381.71
  5. Step 5: Solve for x
    x = 160,506,381.71/13,247.95
  6. Step 6: Final answer
    x = 12,115.56

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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.