Home / 30,913.77-42,661.13-16,766.85

Finding the Fourth Proportional to 30,913.77, 42,661.13 and 16,766.85

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Solution

The fourth proportional to 30,913.77, 42,661.13 and 16,766.85 is: 23,138.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,913.77 : 42,661.13 = 16,766.85 : x
  2. Step 2: Convert to fraction form
    30,913.77/42,661.13 = 16,766.85/x
  3. Step 3: Cross multiply
    30,913.77x = 42,661.13 × 16,766.85
  4. Step 4: Simplify right side
    30,913.77x = 715,292,683.71
  5. Step 5: Solve for x
    x = 715,292,683.71/30,913.77
  6. Step 6: Final answer
    x = 23,138.32

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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.