Home / 17,911.07-26,869.47-5,428.16

Finding the Fourth Proportional to 17,911.07, 26,869.47 and 5,428.16

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Solution

The fourth proportional to 17,911.07, 26,869.47 and 5,428.16 is: 8,143.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.07 : 26,869.47 = 5,428.16 : x
  2. Step 2: Convert to fraction form
    17,911.07/26,869.47 = 5,428.16/x
  3. Step 3: Cross multiply
    17,911.07x = 26,869.47 × 5,428.16
  4. Step 4: Simplify right side
    17,911.07x = 145,851,910.01
  5. Step 5: Solve for x
    x = 145,851,910.01/17,911.07
  6. Step 6: Final answer
    x = 8,143.11

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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.