Home / 12,445.56-18,642.42-9,662.40

Finding the Fourth Proportional to 12,445.56, 18,642.42 and 9,662.40

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Solution

The fourth proportional to 12,445.56, 18,642.42 and 9,662.40 is: 14,473.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.56 : 18,642.42 = 9,662.40 : x
  2. Step 2: Convert to fraction form
    12,445.56/18,642.42 = 9,662.40/x
  3. Step 3: Cross multiply
    12,445.56x = 18,642.42 × 9,662.40
  4. Step 4: Simplify right side
    12,445.56x = 180,130,519.01
  5. Step 5: Solve for x
    x = 180,130,519.01/12,445.56
  6. Step 6: Final answer
    x = 14,473.48

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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.