Home / 28,072.35-38,739.59-15,497.07

Finding the Fourth Proportional to 28,072.35, 38,739.59 and 15,497.07

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Solution

The fourth proportional to 28,072.35, 38,739.59 and 15,497.07 is: 21,385.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.35 : 38,739.59 = 15,497.07 : x
  2. Step 2: Convert to fraction form
    28,072.35/38,739.59 = 15,497.07/x
  3. Step 3: Cross multiply
    28,072.35x = 38,739.59 × 15,497.07
  4. Step 4: Simplify right side
    28,072.35x = 600,350,060.52
  5. Step 5: Solve for x
    x = 600,350,060.52/28,072.35
  6. Step 6: Final answer
    x = 21,385.81

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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.