Home / 15,112.80-20,849.52-10,911.84

Finding the Fourth Proportional to 15,112.80, 20,849.52 and 10,911.84

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Solution

The fourth proportional to 15,112.80, 20,849.52 and 10,911.84 is: 15,053.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,112.80 : 20,849.52 = 10,911.84 : x
  2. Step 2: Convert to fraction form
    15,112.80/20,849.52 = 10,911.84/x
  3. Step 3: Cross multiply
    15,112.80x = 20,849.52 × 10,911.84
  4. Step 4: Simplify right side
    15,112.80x = 227,506,626.32
  5. Step 5: Solve for x
    x = 227,506,626.32/15,112.80
  6. Step 6: Final answer
    x = 15,053.90

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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.