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Finding the Fourth Proportional to 15,339.70, 23,021.70 and 5,984.20

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Solution

The fourth proportional to 15,339.70, 23,021.70 and 5,984.20 is: 8,981.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.70 : 23,021.70 = 5,984.20 : x
  2. Step 2: Convert to fraction form
    15,339.70/23,021.70 = 5,984.20/x
  3. Step 3: Cross multiply
    15,339.70x = 23,021.70 × 5,984.20
  4. Step 4: Simplify right side
    15,339.70x = 137,766,457.14
  5. Step 5: Solve for x
    x = 137,766,457.14/15,339.70
  6. Step 6: Final answer
    x = 8,981.04

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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.