Home / 28,595.28-42,893.70-7,818.78

Finding the Fourth Proportional to 28,595.28, 42,893.70 and 7,818.78

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Solution

The fourth proportional to 28,595.28, 42,893.70 and 7,818.78 is: 11,728.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,595.28 : 42,893.70 = 7,818.78 : x
  2. Step 2: Convert to fraction form
    28,595.28/42,893.70 = 7,818.78/x
  3. Step 3: Cross multiply
    28,595.28x = 42,893.70 × 7,818.78
  4. Step 4: Simplify right side
    28,595.28x = 335,376,403.69
  5. Step 5: Solve for x
    x = 335,376,403.69/28,595.28
  6. Step 6: Final answer
    x = 11,728.38

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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.