Home / 28,037.80-38,691.67-15,291.08

Finding the Fourth Proportional to 28,037.80, 38,691.67 and 15,291.08

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Solution

The fourth proportional to 28,037.80, 38,691.67 and 15,291.08 is: 21,101.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,037.80 : 38,691.67 = 15,291.08 : x
  2. Step 2: Convert to fraction form
    28,037.80/38,691.67 = 15,291.08/x
  3. Step 3: Cross multiply
    28,037.80x = 38,691.67 × 15,291.08
  4. Step 4: Simplify right side
    28,037.80x = 591,637,421.30
  5. Step 5: Solve for x
    x = 591,637,421.30/28,037.80
  6. Step 6: Final answer
    x = 21,101.42

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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.