Home / 17,991.60-26,988.21-5,510.72

Finding the Fourth Proportional to 17,991.60, 26,988.21 and 5,510.72

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Solution

The fourth proportional to 17,991.60, 26,988.21 and 5,510.72 is: 8,266.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.60 : 26,988.21 = 5,510.72 : x
  2. Step 2: Convert to fraction form
    17,991.60/26,988.21 = 5,510.72/x
  3. Step 3: Cross multiply
    17,991.60x = 26,988.21 × 5,510.72
  4. Step 4: Simplify right side
    17,991.60x = 148,724,333.67
  5. Step 5: Solve for x
    x = 148,724,333.67/17,991.60
  6. Step 6: Final answer
    x = 8,266.32

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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.