Home / 20,929.38-28,881.06-11,852.15

Finding the Fourth Proportional to 20,929.38, 28,881.06 and 11,852.15

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Solution

The fourth proportional to 20,929.38, 28,881.06 and 11,852.15 is: 16,355.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,929.38 : 28,881.06 = 11,852.15 : x
  2. Step 2: Convert to fraction form
    20,929.38/28,881.06 = 11,852.15/x
  3. Step 3: Cross multiply
    20,929.38x = 28,881.06 × 11,852.15
  4. Step 4: Simplify right side
    20,929.38x = 342,302,510.87
  5. Step 5: Solve for x
    x = 342,302,510.87/20,929.38
  6. Step 6: Final answer
    x = 16,355.12

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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.