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Finding the Fourth Proportional to 20,362.07, 30,528.53 and 9,981.11

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Solution

The fourth proportional to 20,362.07, 30,528.53 and 9,981.11 is: 14,964.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.07 : 30,528.53 = 9,981.11 : x
  2. Step 2: Convert to fraction form
    20,362.07/30,528.53 = 9,981.11/x
  3. Step 3: Cross multiply
    20,362.07x = 30,528.53 × 9,981.11
  4. Step 4: Simplify right side
    20,362.07x = 304,708,616.07
  5. Step 5: Solve for x
    x = 304,708,616.07/20,362.07
  6. Step 6: Final answer
    x = 14,964.52

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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.