Home / 20,053.51-30,071.38-10,691.78

Finding the Fourth Proportional to 20,053.51, 30,071.38 and 10,691.78

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Solution

The fourth proportional to 20,053.51, 30,071.38 and 10,691.78 is: 16,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,053.51 : 30,071.38 = 10,691.78 : x
  2. Step 2: Convert to fraction form
    20,053.51/30,071.38 = 10,691.78/x
  3. Step 3: Cross multiply
    20,053.51x = 30,071.38 × 10,691.78
  4. Step 4: Simplify right side
    20,053.51x = 321,516,561.30
  5. Step 5: Solve for x
    x = 321,516,561.30/20,053.51
  6. Step 6: Final answer
    x = 16,032.93

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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.