Home / 12,397.86-17,104.21-7,089.84

Finding the Fourth Proportional to 12,397.86, 17,104.21 and 7,089.84

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Solution

The fourth proportional to 12,397.86, 17,104.21 and 7,089.84 is: 9,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,397.86 : 17,104.21 = 7,089.84 : x
  2. Step 2: Convert to fraction form
    12,397.86/17,104.21 = 7,089.84/x
  3. Step 3: Cross multiply
    12,397.86x = 17,104.21 × 7,089.84
  4. Step 4: Simplify right side
    12,397.86x = 121,266,094.50
  5. Step 5: Solve for x
    x = 121,266,094.50/12,397.86
  6. Step 6: Final answer
    x = 9,781.21

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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.