Home / 12,400.32-17,112.96-7,094.40

Finding the Fourth Proportional to 12,400.32, 17,112.96 and 7,094.40

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Solution

The fourth proportional to 12,400.32, 17,112.96 and 7,094.40 is: 9,790.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,400.32 : 17,112.96 = 7,094.40 : x
  2. Step 2: Convert to fraction form
    12,400.32/17,112.96 = 7,094.40/x
  3. Step 3: Cross multiply
    12,400.32x = 17,112.96 × 7,094.40
  4. Step 4: Simplify right side
    12,400.32x = 121,406,183.42
  5. Step 5: Solve for x
    x = 121,406,183.42/12,400.32
  6. Step 6: Final answer
    x = 9,790.57

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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.