Home / 30,965.86-42,732.66-16,818.71

Finding the Fourth Proportional to 30,965.86, 42,732.66 and 16,818.71

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Solution

The fourth proportional to 30,965.86, 42,732.66 and 16,818.71 is: 23,209.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.86 : 42,732.66 = 16,818.71 : x
  2. Step 2: Convert to fraction form
    30,965.86/42,732.66 = 16,818.71/x
  3. Step 3: Cross multiply
    30,965.86x = 42,732.66 × 16,818.71
  4. Step 4: Simplify right side
    30,965.86x = 718,708,065.48
  5. Step 5: Solve for x
    x = 718,708,065.48/30,965.86
  6. Step 6: Final answer
    x = 23,209.69

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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.