Home / 20,535.75-28,340.33-11,583.07

Finding the Fourth Proportional to 20,535.75, 28,340.33 and 11,583.07

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Solution

The fourth proportional to 20,535.75, 28,340.33 and 11,583.07 is: 15,985.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535.75 : 28,340.33 = 11,583.07 : x
  2. Step 2: Convert to fraction form
    20,535.75/28,340.33 = 11,583.07/x
  3. Step 3: Cross multiply
    20,535.75x = 28,340.33 × 11,583.07
  4. Step 4: Simplify right side
    20,535.75x = 328,267,897.45
  5. Step 5: Solve for x
    x = 328,267,897.45/20,535.75
  6. Step 6: Final answer
    x = 15,985.19

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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.