Home / 30,585.12-42,204.42-18,651.39

Finding the Fourth Proportional to 30,585.12, 42,204.42 and 18,651.39

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Solution

The fourth proportional to 30,585.12, 42,204.42 and 18,651.39 is: 25,737.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,585.12 : 42,204.42 = 18,651.39 : x
  2. Step 2: Convert to fraction form
    30,585.12/42,204.42 = 18,651.39/x
  3. Step 3: Cross multiply
    30,585.12x = 42,204.42 × 18,651.39
  4. Step 4: Simplify right side
    30,585.12x = 787,171,097.14
  5. Step 5: Solve for x
    x = 787,171,097.14/30,585.12
  6. Step 6: Final answer
    x = 25,737.06

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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.