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Finding the Fourth Proportional to 30,904.68, 42,648.08 and 16,757.49

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Solution

The fourth proportional to 30,904.68, 42,648.08 and 16,757.49 is: 23,125.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,904.68 : 42,648.08 = 16,757.49 : x
  2. Step 2: Convert to fraction form
    30,904.68/42,648.08 = 16,757.49/x
  3. Step 3: Cross multiply
    30,904.68x = 42,648.08 × 16,757.49
  4. Step 4: Simplify right side
    30,904.68x = 714,674,690.33
  5. Step 5: Solve for x
    x = 714,674,690.33/30,904.68
  6. Step 6: Final answer
    x = 23,125.13

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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.