Home / 20,688.75-28,541.61-16,194.47

Finding the Fourth Proportional to 20,688.75, 28,541.61 and 16,194.47

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Solution

The fourth proportional to 20,688.75, 28,541.61 and 16,194.47 is: 22,341.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,688.75 : 28,541.61 = 16,194.47 : x
  2. Step 2: Convert to fraction form
    20,688.75/28,541.61 = 16,194.47/x
  3. Step 3: Cross multiply
    20,688.75x = 28,541.61 × 16,194.47
  4. Step 4: Simplify right side
    20,688.75x = 462,216,104.19
  5. Step 5: Solve for x
    x = 462,216,104.19/20,688.75
  6. Step 6: Final answer
    x = 22,341.42

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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.