Home / 22,314.78-30,742.20-15,588.54

Finding the Fourth Proportional to 22,314.78, 30,742.20 and 15,588.54

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Solution

The fourth proportional to 22,314.78, 30,742.20 and 15,588.54 is: 21,475.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,314.78 : 30,742.20 = 15,588.54 : x
  2. Step 2: Convert to fraction form
    22,314.78/30,742.20 = 15,588.54/x
  3. Step 3: Cross multiply
    22,314.78x = 30,742.20 × 15,588.54
  4. Step 4: Simplify right side
    22,314.78x = 479,226,014.39
  5. Step 5: Solve for x
    x = 479,226,014.39/22,314.78
  6. Step 6: Final answer
    x = 21,475.72

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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.