Home / 20,718.99-28,603.01-16,171.90

Finding the Fourth Proportional to 20,718.99, 28,603.01 and 16,171.90

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Solution

The fourth proportional to 20,718.99, 28,603.01 and 16,171.90 is: 22,325.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.99 : 28,603.01 = 16,171.90 : x
  2. Step 2: Convert to fraction form
    20,718.99/28,603.01 = 16,171.90/x
  3. Step 3: Cross multiply
    20,718.99x = 28,603.01 × 16,171.90
  4. Step 4: Simplify right side
    20,718.99x = 462,564,986.34
  5. Step 5: Solve for x
    x = 462,564,986.34/20,718.99
  6. Step 6: Final answer
    x = 22,325.65

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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.