Home / 10,478.08-15,717.36-3,455.84

Finding the Fourth Proportional to 10,478.08, 15,717.36 and 3,455.84

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Solution

The fourth proportional to 10,478.08, 15,717.36 and 3,455.84 is: 5,183.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.08 : 15,717.36 = 3,455.84 : x
  2. Step 2: Convert to fraction form
    10,478.08/15,717.36 = 3,455.84/x
  3. Step 3: Cross multiply
    10,478.08x = 15,717.36 × 3,455.84
  4. Step 4: Simplify right side
    10,478.08x = 54,316,681.38
  5. Step 5: Solve for x
    x = 54,316,681.38/10,478.08
  6. Step 6: Final answer
    x = 5,183.84

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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.