Home / 13,442.17-18,550.22-7,474.05

Finding the Fourth Proportional to 13,442.17, 18,550.22 and 7,474.05

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Solution

The fourth proportional to 13,442.17, 18,550.22 and 7,474.05 is: 10,314.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,442.17 : 18,550.22 = 7,474.05 : x
  2. Step 2: Convert to fraction form
    13,442.17/18,550.22 = 7,474.05/x
  3. Step 3: Cross multiply
    13,442.17x = 18,550.22 × 7,474.05
  4. Step 4: Simplify right side
    13,442.17x = 138,645,271.79
  5. Step 5: Solve for x
    x = 138,645,271.79/13,442.17
  6. Step 6: Final answer
    x = 10,314.20

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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.