Home / 20,557.53-30,832.79-7,407.99

Finding the Fourth Proportional to 20,557.53, 30,832.79 and 7,407.99

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Solution

The fourth proportional to 20,557.53, 30,832.79 and 7,407.99 is: 11,110.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.53 : 30,832.79 = 7,407.99 : x
  2. Step 2: Convert to fraction form
    20,557.53/30,832.79 = 7,407.99/x
  3. Step 3: Cross multiply
    20,557.53x = 30,832.79 × 7,407.99
  4. Step 4: Simplify right side
    20,557.53x = 228,408,962.95
  5. Step 5: Solve for x
    x = 228,408,962.95/20,557.53
  6. Step 6: Final answer
    x = 11,110.72

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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.