Home / 28,298.14-39,052.68-15,722.90

Finding the Fourth Proportional to 28,298.14, 39,052.68 and 15,722.90

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Solution

The fourth proportional to 28,298.14, 39,052.68 and 15,722.90 is: 21,698.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,298.14 : 39,052.68 = 15,722.90 : x
  2. Step 2: Convert to fraction form
    28,298.14/39,052.68 = 15,722.90/x
  3. Step 3: Cross multiply
    28,298.14x = 39,052.68 × 15,722.90
  4. Step 4: Simplify right side
    28,298.14x = 614,021,382.37
  5. Step 5: Solve for x
    x = 614,021,382.37/28,298.14
  6. Step 6: Final answer
    x = 21,698.29

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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.