Home / 11,191.40-15,445.70-6,412.84

Finding the Fourth Proportional to 11,191.40, 15,445.70 and 6,412.84

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Solution

The fourth proportional to 11,191.40, 15,445.70 and 6,412.84 is: 8,850.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,191.40 : 15,445.70 = 6,412.84 : x
  2. Step 2: Convert to fraction form
    11,191.40/15,445.70 = 6,412.84/x
  3. Step 3: Cross multiply
    11,191.40x = 15,445.70 × 6,412.84
  4. Step 4: Simplify right side
    11,191.40x = 99,050,802.79
  5. Step 5: Solve for x
    x = 99,050,802.79/11,191.40
  6. Step 6: Final answer
    x = 8,850.62

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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.