Home / 39,960.12-55,091.64-28,646.04

Finding the Fourth Proportional to 39,960.12, 55,091.64 and 28,646.04

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Solution

The fourth proportional to 39,960.12, 55,091.64 and 28,646.04 is: 39,493.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,960.12 : 55,091.64 = 28,646.04 : x
  2. Step 2: Convert to fraction form
    39,960.12/55,091.64 = 28,646.04/x
  3. Step 3: Cross multiply
    39,960.12x = 55,091.64 × 28,646.04
  4. Step 4: Simplify right side
    39,960.12x = 1,578,157,323.11
  5. Step 5: Solve for x
    x = 1,578,157,323.11/39,960.12
  6. Step 6: Final answer
    x = 39,493.31

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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.