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Finding the Fourth Proportional to 21,752.50, 32,628.76 and 9,440.50

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Solution

The fourth proportional to 21,752.50, 32,628.76 and 9,440.50 is: 14,160.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,752.50 : 32,628.76 = 9,440.50 : x
  2. Step 2: Convert to fraction form
    21,752.50/32,628.76 = 9,440.50/x
  3. Step 3: Cross multiply
    21,752.50x = 32,628.76 × 9,440.50
  4. Step 4: Simplify right side
    21,752.50x = 308,031,808.78
  5. Step 5: Solve for x
    x = 308,031,808.78/21,752.50
  6. Step 6: Final answer
    x = 14,160.75

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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.