Home / 20,124.64-27,770.70-11,172.13

Finding the Fourth Proportional to 20,124.64, 27,770.70 and 11,172.13

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Solution

The fourth proportional to 20,124.64, 27,770.70 and 11,172.13 is: 15,416.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.64 : 27,770.70 = 11,172.13 : x
  2. Step 2: Convert to fraction form
    20,124.64/27,770.70 = 11,172.13/x
  3. Step 3: Cross multiply
    20,124.64x = 27,770.70 × 11,172.13
  4. Step 4: Simplify right side
    20,124.64x = 310,257,870.59
  5. Step 5: Solve for x
    x = 310,257,870.59/20,124.64
  6. Step 6: Final answer
    x = 15,416.82

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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.