Home / 20,929.04-28,881.30-11,497.04

Finding the Fourth Proportional to 20,929.04, 28,881.30 and 11,497.04

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Solution

The fourth proportional to 20,929.04, 28,881.30 and 11,497.04 is: 15,865.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.04 : 28,881.30 = 11,497.04 : x
  2. Step 2: Convert to fraction form
    20,929.04/28,881.30 = 11,497.04/x
  3. Step 3: Cross multiply
    20,929.04x = 28,881.30 × 11,497.04
  4. Step 4: Simplify right side
    20,929.04x = 332,049,461.35
  5. Step 5: Solve for x
    x = 332,049,461.35/20,929.04
  6. Step 6: Final answer
    x = 15,865.49

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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.