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Finding the Fourth Proportional to 35,811.84, 53,717.76 and 12,425.60

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Solution

The fourth proportional to 35,811.84, 53,717.76 and 12,425.60 is: 18,638.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,811.84 : 53,717.76 = 12,425.60 : x
  2. Step 2: Convert to fraction form
    35,811.84/53,717.76 = 12,425.60/x
  3. Step 3: Cross multiply
    35,811.84x = 53,717.76 × 12,425.60
  4. Step 4: Simplify right side
    35,811.84x = 667,475,398.66
  5. Step 5: Solve for x
    x = 667,475,398.66/35,811.84
  6. Step 6: Final answer
    x = 18,638.40

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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.