Home / 39,969.64-55,159.88-22,979.38

Finding the Fourth Proportional to 39,969.64, 55,159.88 and 22,979.38

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Solution

The fourth proportional to 39,969.64, 55,159.88 and 22,979.38 is: 31,712.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,969.64 : 55,159.88 = 22,979.38 : x
  2. Step 2: Convert to fraction form
    39,969.64/55,159.88 = 22,979.38/x
  3. Step 3: Cross multiply
    39,969.64x = 55,159.88 × 22,979.38
  4. Step 4: Simplify right side
    39,969.64x = 1,267,539,762.82
  5. Step 5: Solve for x
    x = 1,267,539,762.82/39,969.64
  6. Step 6: Final answer
    x = 31,712.57

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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.