Home / 20,700.47-28,566.83-11,269.01

Finding the Fourth Proportional to 20,700.47, 28,566.83 and 11,269.01

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Solution

The fourth proportional to 20,700.47, 28,566.83 and 11,269.01 is: 15,551.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.47 : 28,566.83 = 11,269.01 : x
  2. Step 2: Convert to fraction form
    20,700.47/28,566.83 = 11,269.01/x
  3. Step 3: Cross multiply
    20,700.47x = 28,566.83 × 11,269.01
  4. Step 4: Simplify right side
    20,700.47x = 321,919,836.59
  5. Step 5: Solve for x
    x = 321,919,836.59/20,700.47
  6. Step 6: Final answer
    x = 15,551.33

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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.