Home / 20,506.52-28,298.98-11,075.09

Finding the Fourth Proportional to 20,506.52, 28,298.98 and 11,075.09

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Solution

The fourth proportional to 20,506.52, 28,298.98 and 11,075.09 is: 15,283.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,506.52 : 28,298.98 = 11,075.09 : x
  2. Step 2: Convert to fraction form
    20,506.52/28,298.98 = 11,075.09/x
  3. Step 3: Cross multiply
    20,506.52x = 28,298.98 × 11,075.09
  4. Step 4: Simplify right side
    20,506.52x = 313,413,622.76
  5. Step 5: Solve for x
    x = 313,413,622.76/20,506.52
  6. Step 6: Final answer
    x = 15,283.61

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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.