Home / 20,802.75-28,707.98-11,371.32

Finding the Fourth Proportional to 20,802.75, 28,707.98 and 11,371.32

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Solution

The fourth proportional to 20,802.75, 28,707.98 and 11,371.32 is: 15,692.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.75 : 28,707.98 = 11,371.32 : x
  2. Step 2: Convert to fraction form
    20,802.75/28,707.98 = 11,371.32/x
  3. Step 3: Cross multiply
    20,802.75x = 28,707.98 × 11,371.32
  4. Step 4: Simplify right side
    20,802.75x = 326,447,570.28
  5. Step 5: Solve for x
    x = 326,447,570.28/20,802.75
  6. Step 6: Final answer
    x = 15,692.52

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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.