Home / 20,989.26-28,959.93-17,002.89

Finding the Fourth Proportional to 20,989.26, 28,959.93 and 17,002.89

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Solution

The fourth proportional to 20,989.26, 28,959.93 and 17,002.89 is: 23,459.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,989.26 : 28,959.93 = 17,002.89 : x
  2. Step 2: Convert to fraction form
    20,989.26/28,959.93 = 17,002.89/x
  3. Step 3: Cross multiply
    20,989.26x = 28,959.93 × 17,002.89
  4. Step 4: Simplify right side
    20,989.26x = 492,402,504.20
  5. Step 5: Solve for x
    x = 492,402,504.20/20,989.26
  6. Step 6: Final answer
    x = 23,459.74

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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.