Home / 9,040.80-13,577.40-8,749.20

Finding the Fourth Proportional to 9,040.80, 13,577.40 and 8,749.20

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Solution

The fourth proportional to 9,040.80, 13,577.40 and 8,749.20 is: 13,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,040.80 : 13,577.40 = 8,749.20 : x
  2. Step 2: Convert to fraction form
    9,040.80/13,577.40 = 8,749.20/x
  3. Step 3: Cross multiply
    9,040.80x = 13,577.40 × 8,749.20
  4. Step 4: Simplify right side
    9,040.80x = 118,791,388.08
  5. Step 5: Solve for x
    x = 118,791,388.08/9,040.80
  6. Step 6: Final answer
    x = 13,139.48

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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.