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Finding the Fourth Proportional to 21,984.46, 32,953.46 and 7,189.40

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Solution

The fourth proportional to 21,984.46, 32,953.46 and 7,189.40 is: 10,776.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,984.46 : 32,953.46 = 7,189.40 : x
  2. Step 2: Convert to fraction form
    21,984.46/32,953.46 = 7,189.40/x
  3. Step 3: Cross multiply
    21,984.46x = 32,953.46 × 7,189.40
  4. Step 4: Simplify right side
    21,984.46x = 236,915,605.32
  5. Step 5: Solve for x
    x = 236,915,605.32/21,984.46
  6. Step 6: Final answer
    x = 10,776.50

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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.