Home / 28,060.38-38,723.19-15,485.90

Finding the Fourth Proportional to 28,060.38, 38,723.19 and 15,485.90

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Solution

The fourth proportional to 28,060.38, 38,723.19 and 15,485.90 is: 21,370.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,060.38 : 38,723.19 = 15,485.90 : x
  2. Step 2: Convert to fraction form
    28,060.38/38,723.19 = 15,485.90/x
  3. Step 3: Cross multiply
    28,060.38x = 38,723.19 × 15,485.90
  4. Step 4: Simplify right side
    28,060.38x = 599,663,448.02
  5. Step 5: Solve for x
    x = 599,663,448.02/28,060.38
  6. Step 6: Final answer
    x = 21,370.47

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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.