Home / 28,123.23-42,193.62-8,402.57

Finding the Fourth Proportional to 28,123.23, 42,193.62 and 8,402.57

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Solution

The fourth proportional to 28,123.23, 42,193.62 and 8,402.57 is: 12,606.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.23 : 42,193.62 = 8,402.57 : x
  2. Step 2: Convert to fraction form
    28,123.23/42,193.62 = 8,402.57/x
  3. Step 3: Cross multiply
    28,123.23x = 42,193.62 × 8,402.57
  4. Step 4: Simplify right side
    28,123.23x = 354,534,634.64
  5. Step 5: Solve for x
    x = 354,534,634.64/28,123.23
  6. Step 6: Final answer
    x = 12,606.47

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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.