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Finding the Fourth Proportional to 21,803.76, 32,707.98 and 9,325.08

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Solution

The fourth proportional to 21,803.76, 32,707.98 and 9,325.08 is: 13,988.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.76 : 32,707.98 = 9,325.08 : x
  2. Step 2: Convert to fraction form
    21,803.76/32,707.98 = 9,325.08/x
  3. Step 3: Cross multiply
    21,803.76x = 32,707.98 × 9,325.08
  4. Step 4: Simplify right side
    21,803.76x = 305,004,530.14
  5. Step 5: Solve for x
    x = 305,004,530.14/21,803.76
  6. Step 6: Final answer
    x = 13,988.62

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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.