Home / 20,551.28-30,830.02-7,400.57

Finding the Fourth Proportional to 20,551.28, 30,830.02 and 7,400.57

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Solution

The fourth proportional to 20,551.28, 30,830.02 and 7,400.57 is: 11,101.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.28 : 30,830.02 = 7,400.57 : x
  2. Step 2: Convert to fraction form
    20,551.28/30,830.02 = 7,400.57/x
  3. Step 3: Cross multiply
    20,551.28x = 30,830.02 × 7,400.57
  4. Step 4: Simplify right side
    20,551.28x = 228,159,779.69
  5. Step 5: Solve for x
    x = 228,159,779.69/20,551.28
  6. Step 6: Final answer
    x = 11,101.97

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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.