Home / 20,718.67-28,602.60-16,171.60

Finding the Fourth Proportional to 20,718.67, 28,602.60 and 16,171.60

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Solution

The fourth proportional to 20,718.67, 28,602.60 and 16,171.60 is: 22,325.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.67 : 28,602.60 = 16,171.60 : x
  2. Step 2: Convert to fraction form
    20,718.67/28,602.60 = 16,171.60/x
  3. Step 3: Cross multiply
    20,718.67x = 28,602.60 × 16,171.60
  4. Step 4: Simplify right side
    20,718.67x = 462,549,674.01
  5. Step 5: Solve for x
    x = 462,549,674.01/20,718.67
  6. Step 6: Final answer
    x = 22,325.26

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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.