Home / 15,377.64-21,222.45-8,664.59

Finding the Fourth Proportional to 15,377.64, 21,222.45 and 8,664.59

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Solution

The fourth proportional to 15,377.64, 21,222.45 and 8,664.59 is: 11,957.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,377.64 : 21,222.45 = 8,664.59 : x
  2. Step 2: Convert to fraction form
    15,377.64/21,222.45 = 8,664.59/x
  3. Step 3: Cross multiply
    15,377.64x = 21,222.45 × 8,664.59
  4. Step 4: Simplify right side
    15,377.64x = 183,883,721.93
  5. Step 5: Solve for x
    x = 183,883,721.93/15,377.64
  6. Step 6: Final answer
    x = 11,957.86

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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.