Home / 13,577.28-18,734.16-7,989.60

Finding the Fourth Proportional to 13,577.28, 18,734.16 and 7,989.60

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Solution

The fourth proportional to 13,577.28, 18,734.16 and 7,989.60 is: 11,024.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,577.28 : 18,734.16 = 7,989.60 : x
  2. Step 2: Convert to fraction form
    13,577.28/18,734.16 = 7,989.60/x
  3. Step 3: Cross multiply
    13,577.28x = 18,734.16 × 7,989.60
  4. Step 4: Simplify right side
    13,577.28x = 149,678,444.74
  5. Step 5: Solve for x
    x = 149,678,444.74/13,577.28
  6. Step 6: Final answer
    x = 11,024.18

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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.