Home / 28,158.06-38,858.19-15,582.90

Finding the Fourth Proportional to 28,158.06, 38,858.19 and 15,582.90

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Solution

The fourth proportional to 28,158.06, 38,858.19 and 15,582.90 is: 21,504.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.06 : 38,858.19 = 15,582.90 : x
  2. Step 2: Convert to fraction form
    28,158.06/38,858.19 = 15,582.90/x
  3. Step 3: Cross multiply
    28,158.06x = 38,858.19 × 15,582.90
  4. Step 4: Simplify right side
    28,158.06x = 605,523,288.95
  5. Step 5: Solve for x
    x = 605,523,288.95/28,158.06
  6. Step 6: Final answer
    x = 21,504.44

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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.