Home / 17,990.74-26,985.14-5,510.78

Finding the Fourth Proportional to 17,990.74, 26,985.14 and 5,510.78

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Solution

The fourth proportional to 17,990.74, 26,985.14 and 5,510.78 is: 8,265.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.74 : 26,985.14 = 5,510.78 : x
  2. Step 2: Convert to fraction form
    17,990.74/26,985.14 = 5,510.78/x
  3. Step 3: Cross multiply
    17,990.74x = 26,985.14 × 5,510.78
  4. Step 4: Simplify right side
    17,990.74x = 148,709,169.81
  5. Step 5: Solve for x
    x = 148,709,169.81/17,990.74
  6. Step 6: Final answer
    x = 8,265.87

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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.