Home / 30,880.32-42,593.16-18,949.44

Finding the Fourth Proportional to 30,880.32, 42,593.16 and 18,949.44

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Solution

The fourth proportional to 30,880.32, 42,593.16 and 18,949.44 is: 26,136.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,880.32 : 42,593.16 = 18,949.44 : x
  2. Step 2: Convert to fraction form
    30,880.32/42,593.16 = 18,949.44/x
  3. Step 3: Cross multiply
    30,880.32x = 42,593.16 × 18,949.44
  4. Step 4: Simplify right side
    30,880.32x = 807,116,529.83
  5. Step 5: Solve for x
    x = 807,116,529.83/30,880.32
  6. Step 6: Final answer
    x = 26,136.92

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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.