Home / 20,948.04-28,908.36-11,995.56

Finding the Fourth Proportional to 20,948.04, 28,908.36 and 11,995.56

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Solution

The fourth proportional to 20,948.04, 28,908.36 and 11,995.56 is: 16,553.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,948.04 : 28,908.36 = 11,995.56 : x
  2. Step 2: Convert to fraction form
    20,948.04/28,908.36 = 11,995.56/x
  3. Step 3: Cross multiply
    20,948.04x = 28,908.36 × 11,995.56
  4. Step 4: Simplify right side
    20,948.04x = 346,771,966.88
  5. Step 5: Solve for x
    x = 346,771,966.88/20,948.04
  6. Step 6: Final answer
    x = 16,553.91

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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.