Home / 39,960.12-59,940.30-10,378.20

Finding the Fourth Proportional to 39,960.12, 59,940.30 and 10,378.20

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Solution

The fourth proportional to 39,960.12, 59,940.30 and 10,378.20 is: 15,567.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,960.12 : 59,940.30 = 10,378.20 : x
  2. Step 2: Convert to fraction form
    39,960.12/59,940.30 = 10,378.20/x
  3. Step 3: Cross multiply
    39,960.12x = 59,940.30 × 10,378.20
  4. Step 4: Simplify right side
    39,960.12x = 622,072,421.46
  5. Step 5: Solve for x
    x = 622,072,421.46/39,960.12
  6. Step 6: Final answer
    x = 15,567.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.