Home / 27,729.68-38,267.16-15,155.60

Finding the Fourth Proportional to 27,729.68, 38,267.16 and 15,155.60

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Solution

The fourth proportional to 27,729.68, 38,267.16 and 15,155.60 is: 20,914.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,729.68 : 38,267.16 = 15,155.60 : x
  2. Step 2: Convert to fraction form
    27,729.68/38,267.16 = 15,155.60/x
  3. Step 3: Cross multiply
    27,729.68x = 38,267.16 × 15,155.60
  4. Step 4: Simplify right side
    27,729.68x = 579,961,770.10
  5. Step 5: Solve for x
    x = 579,961,770.10/27,729.68
  6. Step 6: Final answer
    x = 20,914.84

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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.