Home / 30,925.78-42,677.57-16,778.61

Finding the Fourth Proportional to 30,925.78, 42,677.57 and 16,778.61

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Solution

The fourth proportional to 30,925.78, 42,677.57 and 16,778.61 is: 23,154.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,925.78 : 42,677.57 = 16,778.61 : x
  2. Step 2: Convert to fraction form
    30,925.78/42,677.57 = 16,778.61/x
  3. Step 3: Cross multiply
    30,925.78x = 42,677.57 × 16,778.61
  4. Step 4: Simplify right side
    30,925.78x = 716,070,344.72
  5. Step 5: Solve for x
    x = 716,070,344.72/30,925.78
  6. Step 6: Final answer
    x = 23,154.48

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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.