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Finding the Fourth Proportional to 34,497.78, 51,615.45 and 21,317.46

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Solution

The fourth proportional to 34,497.78, 51,615.45 and 21,317.46 is: 31,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,497.78 : 51,615.45 = 21,317.46 : x
  2. Step 2: Convert to fraction form
    34,497.78/51,615.45 = 21,317.46/x
  3. Step 3: Cross multiply
    34,497.78x = 51,615.45 × 21,317.46
  4. Step 4: Simplify right side
    34,497.78x = 1,100,310,290.76
  5. Step 5: Solve for x
    x = 1,100,310,290.76/34,497.78
  6. Step 6: Final answer
    x = 31,895.10

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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.