Home / 12,008.57-17,988.70-5,986.47

Finding the Fourth Proportional to 12,008.57, 17,988.70 and 5,986.47

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Solution

The fourth proportional to 12,008.57, 17,988.70 and 5,986.47 is: 8,967.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.57 : 17,988.70 = 5,986.47 : x
  2. Step 2: Convert to fraction form
    12,008.57/17,988.70 = 5,986.47/x
  3. Step 3: Cross multiply
    12,008.57x = 17,988.70 × 5,986.47
  4. Step 4: Simplify right side
    12,008.57x = 107,688,797.92
  5. Step 5: Solve for x
    x = 107,688,797.92/12,008.57
  6. Step 6: Final answer
    x = 8,967.67

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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.