Home / 28,014.06-38,659.41-15,438.81

Finding the Fourth Proportional to 28,014.06, 38,659.41 and 15,438.81

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Solution

The fourth proportional to 28,014.06, 38,659.41 and 15,438.81 is: 21,305.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.06 : 38,659.41 = 15,438.81 : x
  2. Step 2: Convert to fraction form
    28,014.06/38,659.41 = 15,438.81/x
  3. Step 3: Cross multiply
    28,014.06x = 38,659.41 × 15,438.81
  4. Step 4: Simplify right side
    28,014.06x = 596,855,285.70
  5. Step 5: Solve for x
    x = 596,855,285.70/28,014.06
  6. Step 6: Final answer
    x = 21,305.56

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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.