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Finding the Fourth Proportional to 21,532.50, 32,313.42 and 7,681.50

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Solution

The fourth proportional to 21,532.50, 32,313.42 and 7,681.50 is: 11,527.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,532.50 : 32,313.42 = 7,681.50 : x
  2. Step 2: Convert to fraction form
    21,532.50/32,313.42 = 7,681.50/x
  3. Step 3: Cross multiply
    21,532.50x = 32,313.42 × 7,681.50
  4. Step 4: Simplify right side
    21,532.50x = 248,215,535.73
  5. Step 5: Solve for x
    x = 248,215,535.73/21,532.50
  6. Step 6: Final answer
    x = 11,527.48

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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.