Home / 9,808.10-14,718.45-5,428.70

Finding the Fourth Proportional to 9,808.10, 14,718.45 and 5,428.70

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Solution

The fourth proportional to 9,808.10, 14,718.45 and 5,428.70 is: 8,146.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,808.10 : 14,718.45 = 5,428.70 : x
  2. Step 2: Convert to fraction form
    9,808.10/14,718.45 = 5,428.70/x
  3. Step 3: Cross multiply
    9,808.10x = 14,718.45 × 5,428.70
  4. Step 4: Simplify right side
    9,808.10x = 79,902,049.52
  5. Step 5: Solve for x
    x = 79,902,049.52/9,808.10
  6. Step 6: Final answer
    x = 8,146.54

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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.