Home / 39,860.04-55,007.24-21,955.68

Finding the Fourth Proportional to 39,860.04, 55,007.24 and 21,955.68

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Solution

The fourth proportional to 39,860.04, 55,007.24 and 21,955.68 is: 30,299.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,860.04 : 55,007.24 = 21,955.68 : x
  2. Step 2: Convert to fraction form
    39,860.04/55,007.24 = 21,955.68/x
  3. Step 3: Cross multiply
    39,860.04x = 55,007.24 × 21,955.68
  4. Step 4: Simplify right side
    39,860.04x = 1,207,721,359.12
  5. Step 5: Solve for x
    x = 1,207,721,359.12/39,860.04
  6. Step 6: Final answer
    x = 30,299.05

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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.