Home / 13,397.36-18,489.66-7,808

Finding the Fourth Proportional to 13,397.36, 18,489.66 and 7,808

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Solution

The fourth proportional to 13,397.36, 18,489.66 and 7,808 is: 10,775.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.36 : 18,489.66 = 7,808 : x
  2. Step 2: Convert to fraction form
    13,397.36/18,489.66 = 7,808/x
  3. Step 3: Cross multiply
    13,397.36x = 18,489.66 × 7,808
  4. Step 4: Simplify right side
    13,397.36x = 144,367,265.28
  5. Step 5: Solve for x
    x = 144,367,265.28/13,397.36
  6. Step 6: Final answer
    x = 10,775.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.