Home / 17,988.85-26,990.30-11,420.29

Finding the Fourth Proportional to 17,988.85, 26,990.30 and 11,420.29

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Solution

The fourth proportional to 17,988.85, 26,990.30 and 11,420.29 is: 17,134.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,988.85 : 26,990.30 = 11,420.29 : x
  2. Step 2: Convert to fraction form
    17,988.85/26,990.30 = 11,420.29/x
  3. Step 3: Cross multiply
    17,988.85x = 26,990.30 × 11,420.29
  4. Step 4: Simplify right side
    17,988.85x = 308,237,053.19
  5. Step 5: Solve for x
    x = 308,237,053.19/17,988.85
  6. Step 6: Final answer
    x = 17,134.89

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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.