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Finding the Fourth Proportional to 18,984.47, 28,466.04 and 7,883.69

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Solution

The fourth proportional to 18,984.47, 28,466.04 and 7,883.69 is: 11,821.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,984.47 : 28,466.04 = 7,883.69 : x
  2. Step 2: Convert to fraction form
    18,984.47/28,466.04 = 7,883.69/x
  3. Step 3: Cross multiply
    18,984.47x = 28,466.04 × 7,883.69
  4. Step 4: Simplify right side
    18,984.47x = 224,417,434.89
  5. Step 5: Solve for x
    x = 224,417,434.89/18,984.47
  6. Step 6: Final answer
    x = 11,821.11

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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.