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Finding the Fourth Proportional to 34,392.90, 51,637.95 and 21,270.90

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Solution

The fourth proportional to 34,392.90, 51,637.95 and 21,270.90 is: 31,936.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,392.90 : 51,637.95 = 21,270.90 : x
  2. Step 2: Convert to fraction form
    34,392.90/51,637.95 = 21,270.90/x
  3. Step 3: Cross multiply
    34,392.90x = 51,637.95 × 21,270.90
  4. Step 4: Simplify right side
    34,392.90x = 1,098,385,670.66
  5. Step 5: Solve for x
    x = 1,098,385,670.66/34,392.90
  6. Step 6: Final answer
    x = 31,936.41

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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.