Home / 28,729.80-39,654.09-19,170.18

Finding the Fourth Proportional to 28,729.80, 39,654.09 and 19,170.18

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Solution

The fourth proportional to 28,729.80, 39,654.09 and 19,170.18 is: 26,459.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729.80 : 39,654.09 = 19,170.18 : x
  2. Step 2: Convert to fraction form
    28,729.80/39,654.09 = 19,170.18/x
  3. Step 3: Cross multiply
    28,729.80x = 39,654.09 × 19,170.18
  4. Step 4: Simplify right side
    28,729.80x = 760,176,043.04
  5. Step 5: Solve for x
    x = 760,176,043.04/28,729.80
  6. Step 6: Final answer
    x = 26,459.50

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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.