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Finding the Fourth Proportional to 39,752.51, 54,858.42 and 21,848.67

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Solution

The fourth proportional to 39,752.51, 54,858.42 and 21,848.67 is: 30,151.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,752.51 : 54,858.42 = 21,848.67 : x
  2. Step 2: Convert to fraction form
    39,752.51/54,858.42 = 21,848.67/x
  3. Step 3: Cross multiply
    39,752.51x = 54,858.42 × 21,848.67
  4. Step 4: Simplify right side
    39,752.51x = 1,198,583,515.30
  5. Step 5: Solve for x
    x = 1,198,583,515.30/39,752.51
  6. Step 6: Final answer
    x = 30,151.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.