Home / 30,965.74-42,732.80-16,818.28

Finding the Fourth Proportional to 30,965.74, 42,732.80 and 16,818.28

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Solution

The fourth proportional to 30,965.74, 42,732.80 and 16,818.28 is: 23,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.74 : 42,732.80 = 16,818.28 : x
  2. Step 2: Convert to fraction form
    30,965.74/42,732.80 = 16,818.28/x
  3. Step 3: Cross multiply
    30,965.74x = 42,732.80 × 16,818.28
  4. Step 4: Simplify right side
    30,965.74x = 718,692,195.58
  5. Step 5: Solve for x
    x = 718,692,195.58/30,965.74
  6. Step 6: Final answer
    x = 23,209.27

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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.