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Finding the Fourth Proportional to 11,390.22, 17,062.65 and 7,482.78

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Solution

The fourth proportional to 11,390.22, 17,062.65 and 7,482.78 is: 11,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.22 : 17,062.65 = 7,482.78 : x
  2. Step 2: Convert to fraction form
    11,390.22/17,062.65 = 7,482.78/x
  3. Step 3: Cross multiply
    11,390.22x = 17,062.65 × 7,482.78
  4. Step 4: Simplify right side
    11,390.22x = 127,676,056.17
  5. Step 5: Solve for x
    x = 127,676,056.17/11,390.22
  6. Step 6: Final answer
    x = 11,209.27

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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.