Home / 20,557.38-30,817.57-7,400.50

Finding the Fourth Proportional to 20,557.38, 30,817.57 and 7,400.50

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Solution

The fourth proportional to 20,557.38, 30,817.57 and 7,400.50 is: 11,094.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.38 : 30,817.57 = 7,400.50 : x
  2. Step 2: Convert to fraction form
    20,557.38/30,817.57 = 7,400.50/x
  3. Step 3: Cross multiply
    20,557.38x = 30,817.57 × 7,400.50
  4. Step 4: Simplify right side
    20,557.38x = 228,065,426.79
  5. Step 5: Solve for x
    x = 228,065,426.79/20,557.38
  6. Step 6: Final answer
    x = 11,094.09

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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.