Home / 30,965.36-42,731.96-16,818.30

Finding the Fourth Proportional to 30,965.36, 42,731.96 and 16,818.30

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Solution

The fourth proportional to 30,965.36, 42,731.96 and 16,818.30 is: 23,209.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.36 : 42,731.96 = 16,818.30 : x
  2. Step 2: Convert to fraction form
    30,965.36/42,731.96 = 16,818.30/x
  3. Step 3: Cross multiply
    30,965.36x = 42,731.96 × 16,818.30
  4. Step 4: Simplify right side
    30,965.36x = 718,678,838.78
  5. Step 5: Solve for x
    x = 718,678,838.78/30,965.36
  6. Step 6: Final answer
    x = 23,209.13

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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.