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Finding the Fourth Proportional to 25,935.07, 38,902.63 and 7,215.11

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Solution

The fourth proportional to 25,935.07, 38,902.63 and 7,215.11 is: 10,822.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,935.07 : 38,902.63 = 7,215.11 : x
  2. Step 2: Convert to fraction form
    25,935.07/38,902.63 = 7,215.11/x
  3. Step 3: Cross multiply
    25,935.07x = 38,902.63 × 7,215.11
  4. Step 4: Simplify right side
    25,935.07x = 280,686,754.74
  5. Step 5: Solve for x
    x = 280,686,754.74/25,935.07
  6. Step 6: Final answer
    x = 10,822.67

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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.