Home / 10,918.80-16,353.90-5,718.60

Finding the Fourth Proportional to 10,918.80, 16,353.90 and 5,718.60

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Solution

The fourth proportional to 10,918.80, 16,353.90 and 5,718.60 is: 8,565.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.80 : 16,353.90 = 5,718.60 : x
  2. Step 2: Convert to fraction form
    10,918.80/16,353.90 = 5,718.60/x
  3. Step 3: Cross multiply
    10,918.80x = 16,353.90 × 5,718.60
  4. Step 4: Simplify right side
    10,918.80x = 93,521,412.54
  5. Step 5: Solve for x
    x = 93,521,412.54/10,918.80
  6. Step 6: Final answer
    x = 8,565.17

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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.