Home / 28,060.96-38,722.28-15,485.76

Finding the Fourth Proportional to 28,060.96, 38,722.28 and 15,485.76

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Solution

The fourth proportional to 28,060.96, 38,722.28 and 15,485.76 is: 21,369.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,060.96 : 38,722.28 = 15,485.76 : x
  2. Step 2: Convert to fraction form
    28,060.96/38,722.28 = 15,485.76/x
  3. Step 3: Cross multiply
    28,060.96x = 38,722.28 × 15,485.76
  4. Step 4: Simplify right side
    28,060.96x = 599,643,934.73
  5. Step 5: Solve for x
    x = 599,643,934.73/28,060.96
  6. Step 6: Final answer
    x = 21,369.33

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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.