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Finding the Fourth Proportional to 34,798.82, 47,969.01 and 21,345.12

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Solution

The fourth proportional to 34,798.82, 47,969.01 and 21,345.12 is: 29,423.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,798.82 : 47,969.01 = 21,345.12 : x
  2. Step 2: Convert to fraction form
    34,798.82/47,969.01 = 21,345.12/x
  3. Step 3: Cross multiply
    34,798.82x = 47,969.01 × 21,345.12
  4. Step 4: Simplify right side
    34,798.82x = 1,023,904,274.73
  5. Step 5: Solve for x
    x = 1,023,904,274.73/34,798.82
  6. Step 6: Final answer
    x = 29,423.54

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Double scale
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Similar ratio
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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.