Home / 28,278.76-42,381.24-15,798.28

Finding the Fourth Proportional to 28,278.76, 42,381.24 and 15,798.28

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Solution

The fourth proportional to 28,278.76, 42,381.24 and 15,798.28 is: 23,676.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,278.76 : 42,381.24 = 15,798.28 : x
  2. Step 2: Convert to fraction form
    28,278.76/42,381.24 = 15,798.28/x
  3. Step 3: Cross multiply
    28,278.76x = 42,381.24 × 15,798.28
  4. Step 4: Simplify right side
    28,278.76x = 669,550,696.27
  5. Step 5: Solve for x
    x = 669,550,696.27/28,278.76
  6. Step 6: Final answer
    x = 23,676.81

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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.