Home / 18,425.93-27,638.78-5,278.32

Finding the Fourth Proportional to 18,425.93, 27,638.78 and 5,278.32

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Solution

The fourth proportional to 18,425.93, 27,638.78 and 5,278.32 is: 7,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,425.93 : 27,638.78 = 5,278.32 : x
  2. Step 2: Convert to fraction form
    18,425.93/27,638.78 = 5,278.32/x
  3. Step 3: Cross multiply
    18,425.93x = 27,638.78 × 5,278.32
  4. Step 4: Simplify right side
    18,425.93x = 145,886,298.86
  5. Step 5: Solve for x
    x = 145,886,298.86/18,425.93
  6. Step 6: Final answer
    x = 7,917.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.