Home / 20,685.83-28,545.62-11,254.41

Finding the Fourth Proportional to 20,685.83, 28,545.62 and 11,254.41

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Solution

The fourth proportional to 20,685.83, 28,545.62 and 11,254.41 is: 15,530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.83 : 28,545.62 = 11,254.41 : x
  2. Step 2: Convert to fraction form
    20,685.83/28,545.62 = 11,254.41/x
  3. Step 3: Cross multiply
    20,685.83x = 28,545.62 × 11,254.41
  4. Step 4: Simplify right side
    20,685.83x = 321,264,054.91
  5. Step 5: Solve for x
    x = 321,264,054.91/20,685.83
  6. Step 6: Final answer
    x = 15,530.64

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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.