Home / 30,911.88-42,660.68-17,301.28

Finding the Fourth Proportional to 30,911.88, 42,660.68 and 17,301.28

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Solution

The fourth proportional to 30,911.88, 42,660.68 and 17,301.28 is: 23,877.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,911.88 : 42,660.68 = 17,301.28 : x
  2. Step 2: Convert to fraction form
    30,911.88/42,660.68 = 17,301.28/x
  3. Step 3: Cross multiply
    30,911.88x = 42,660.68 × 17,301.28
  4. Step 4: Simplify right side
    30,911.88x = 738,084,369.67
  5. Step 5: Solve for x
    x = 738,084,369.67/30,911.88
  6. Step 6: Final answer
    x = 23,877.05

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1.5x scale

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.