Home / 39,908.13-55,071.51-21,758.46

Finding the Fourth Proportional to 39,908.13, 55,071.51 and 21,758.46

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Solution

The fourth proportional to 39,908.13, 55,071.51 and 21,758.46 is: 30,025.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,908.13 : 55,071.51 = 21,758.46 : x
  2. Step 2: Convert to fraction form
    39,908.13/55,071.51 = 21,758.46/x
  3. Step 3: Cross multiply
    39,908.13x = 55,071.51 × 21,758.46
  4. Step 4: Simplify right side
    39,908.13x = 1,198,271,247.47
  5. Step 5: Solve for x
    x = 1,198,271,247.47/39,908.13
  6. Step 6: Final answer
    x = 30,025.74

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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.