Home / 20,440.01-28,207.49-11,486.98

Finding the Fourth Proportional to 20,440.01, 28,207.49 and 11,486.98

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Solution

The fourth proportional to 20,440.01, 28,207.49 and 11,486.98 is: 15,852.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.01 : 28,207.49 = 11,486.98 : x
  2. Step 2: Convert to fraction form
    20,440.01/28,207.49 = 11,486.98/x
  3. Step 3: Cross multiply
    20,440.01x = 28,207.49 × 11,486.98
  4. Step 4: Simplify right side
    20,440.01x = 324,018,915.92
  5. Step 5: Solve for x
    x = 324,018,915.92/20,440.01
  6. Step 6: Final answer
    x = 15,852.19

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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.