Home / 28,188.07-38,900.55-15,612.82

Finding the Fourth Proportional to 28,188.07, 38,900.55 and 15,612.82

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Solution

The fourth proportional to 28,188.07, 38,900.55 and 15,612.82 is: 21,546.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,188.07 : 38,900.55 = 15,612.82 : x
  2. Step 2: Convert to fraction form
    28,188.07/38,900.55 = 15,612.82/x
  3. Step 3: Cross multiply
    28,188.07x = 38,900.55 × 15,612.82
  4. Step 4: Simplify right side
    28,188.07x = 607,347,246.35
  5. Step 5: Solve for x
    x = 607,347,246.35/28,188.07
  6. Step 6: Final answer
    x = 21,546.25

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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.