Home / 11,209.18-15,356.64-10,788.79

Finding the Fourth Proportional to 11,209.18, 15,356.64 and 10,788.79

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Solution

The fourth proportional to 11,209.18, 15,356.64 and 10,788.79 is: 14,780.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,209.18 : 15,356.64 = 10,788.79 : x
  2. Step 2: Convert to fraction form
    11,209.18/15,356.64 = 10,788.79/x
  3. Step 3: Cross multiply
    11,209.18x = 15,356.64 × 10,788.79
  4. Step 4: Simplify right side
    11,209.18x = 165,679,525.67
  5. Step 5: Solve for x
    x = 165,679,525.67/11,209.18
  6. Step 6: Final answer
    x = 14,780.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.