Home / 20,700.36-28,566.50-11,268.92

Finding the Fourth Proportional to 20,700.36, 28,566.50 and 11,268.92

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Solution

The fourth proportional to 20,700.36, 28,566.50 and 11,268.92 is: 15,551.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.36 : 28,566.50 = 11,268.92 : x
  2. Step 2: Convert to fraction form
    20,700.36/28,566.50 = 11,268.92/x
  3. Step 3: Cross multiply
    20,700.36x = 28,566.50 × 11,268.92
  4. Step 4: Simplify right side
    20,700.36x = 321,913,702.77
  5. Step 5: Solve for x
    x = 321,913,702.77/20,700.36
  6. Step 6: Final answer
    x = 15,551.12

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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.