Home / 28,903.90-39,887.14-20,302.17

Finding the Fourth Proportional to 28,903.90, 39,887.14 and 20,302.17

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Solution

The fourth proportional to 28,903.90, 39,887.14 and 20,302.17 is: 28,016.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,903.90 : 39,887.14 = 20,302.17 : x
  2. Step 2: Convert to fraction form
    28,903.90/39,887.14 = 20,302.17/x
  3. Step 3: Cross multiply
    28,903.90x = 39,887.14 × 20,302.17
  4. Step 4: Simplify right side
    28,903.90x = 809,795,497.09
  5. Step 5: Solve for x
    x = 809,795,497.09/28,903.90
  6. Step 6: Final answer
    x = 28,016.82

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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.