Home / 28,279.38-42,405.75-10,497.72

Finding the Fourth Proportional to 28,279.38, 42,405.75 and 10,497.72

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Solution

The fourth proportional to 28,279.38, 42,405.75 and 10,497.72 is: 15,741.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.38 : 42,405.75 = 10,497.72 : x
  2. Step 2: Convert to fraction form
    28,279.38/42,405.75 = 10,497.72/x
  3. Step 3: Cross multiply
    28,279.38x = 42,405.75 × 10,497.72
  4. Step 4: Simplify right side
    28,279.38x = 445,163,689.89
  5. Step 5: Solve for x
    x = 445,163,689.89/28,279.38
  6. Step 6: Final answer
    x = 15,741.64

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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.