Home / 30,643.32-42,295.50-18,072.12

Finding the Fourth Proportional to 30,643.32, 42,295.50 and 18,072.12

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Solution

The fourth proportional to 30,643.32, 42,295.50 and 18,072.12 is: 24,944.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,643.32 : 42,295.50 = 18,072.12 : x
  2. Step 2: Convert to fraction form
    30,643.32/42,295.50 = 18,072.12/x
  3. Step 3: Cross multiply
    30,643.32x = 42,295.50 × 18,072.12
  4. Step 4: Simplify right side
    30,643.32x = 764,369,351.46
  5. Step 5: Solve for x
    x = 764,369,351.46/30,643.32
  6. Step 6: Final answer
    x = 24,944.08

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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.