Home / 15,377.55-21,223.04-8,664.48

Finding the Fourth Proportional to 15,377.55, 21,223.04 and 8,664.48

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Solution

The fourth proportional to 15,377.55, 21,223.04 and 8,664.48 is: 11,958.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.55 : 21,223.04 = 8,664.48 : x
  2. Step 2: Convert to fraction form
    15,377.55/21,223.04 = 8,664.48/x
  3. Step 3: Cross multiply
    15,377.55x = 21,223.04 × 8,664.48
  4. Step 4: Simplify right side
    15,377.55x = 183,886,562.30
  5. Step 5: Solve for x
    x = 183,886,562.30/15,377.55
  6. Step 6: Final answer
    x = 11,958.12

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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.