Home / 20,985.66-28,969.29-15,006.96

Finding the Fourth Proportional to 20,985.66, 28,969.29 and 15,006.96

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Solution

The fourth proportional to 20,985.66, 28,969.29 and 15,006.96 is: 20,716.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.66 : 28,969.29 = 15,006.96 : x
  2. Step 2: Convert to fraction form
    20,985.66/28,969.29 = 15,006.96/x
  3. Step 3: Cross multiply
    20,985.66x = 28,969.29 × 15,006.96
  4. Step 4: Simplify right side
    20,985.66x = 434,740,976.26
  5. Step 5: Solve for x
    x = 434,740,976.26/20,985.66
  6. Step 6: Final answer
    x = 20,716.10

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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.