Home / 28,054.11-38,714.81-15,478.86

Finding the Fourth Proportional to 28,054.11, 38,714.81 and 15,478.86

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Solution

The fourth proportional to 28,054.11, 38,714.81 and 15,478.86 is: 21,360.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.11 : 38,714.81 = 15,478.86 : x
  2. Step 2: Convert to fraction form
    28,054.11/38,714.81 = 15,478.86/x
  3. Step 3: Cross multiply
    28,054.11x = 38,714.81 × 15,478.86
  4. Step 4: Simplify right side
    28,054.11x = 599,261,046.52
  5. Step 5: Solve for x
    x = 599,261,046.52/28,054.11
  6. Step 6: Final answer
    x = 21,360.90

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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.