Home / 15,315.04-21,144.54-11,951.92

Finding the Fourth Proportional to 15,315.04, 21,144.54 and 11,951.92

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Solution

The fourth proportional to 15,315.04, 21,144.54 and 11,951.92 is: 16,501.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.04 : 21,144.54 = 11,951.92 : x
  2. Step 2: Convert to fraction form
    15,315.04/21,144.54 = 11,951.92/x
  3. Step 3: Cross multiply
    15,315.04x = 21,144.54 × 11,951.92
  4. Step 4: Simplify right side
    15,315.04x = 252,717,850.52
  5. Step 5: Solve for x
    x = 252,717,850.52/15,315.04
  6. Step 6: Final answer
    x = 16,501.29

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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.