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Finding the Fourth Proportional to 23,657.28, 35,408.16 and 21,065.28

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Solution

The fourth proportional to 23,657.28, 35,408.16 and 21,065.28 is: 31,528.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,657.28 : 35,408.16 = 21,065.28 : x
  2. Step 2: Convert to fraction form
    23,657.28/35,408.16 = 21,065.28/x
  3. Step 3: Cross multiply
    23,657.28x = 35,408.16 × 21,065.28
  4. Step 4: Simplify right side
    23,657.28x = 745,882,804.68
  5. Step 5: Solve for x
    x = 745,882,804.68/23,657.28
  6. Step 6: Final answer
    x = 31,528.68

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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.