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Finding the Fourth Proportional to 20,643.93, 30,933.63 and 15,071.67

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Solution

The fourth proportional to 20,643.93, 30,933.63 and 15,071.67 is: 22,583.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.93 : 30,933.63 = 15,071.67 : x
  2. Step 2: Convert to fraction form
    20,643.93/30,933.63 = 15,071.67/x
  3. Step 3: Cross multiply
    20,643.93x = 30,933.63 × 15,071.67
  4. Step 4: Simplify right side
    20,643.93x = 466,221,463.26
  5. Step 5: Solve for x
    x = 466,221,463.26/20,643.93
  6. Step 6: Final answer
    x = 22,583.95

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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.