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Finding the Fourth Proportional to 15,075.84, 20,801.97 and 9,103.51

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Solution

The fourth proportional to 15,075.84, 20,801.97 and 9,103.51 is: 12,561.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.84 : 20,801.97 = 9,103.51 : x
  2. Step 2: Convert to fraction form
    15,075.84/20,801.97 = 9,103.51/x
  3. Step 3: Cross multiply
    15,075.84x = 20,801.97 × 9,103.51
  4. Step 4: Simplify right side
    15,075.84x = 189,370,872.04
  5. Step 5: Solve for x
    x = 189,370,872.04/15,075.84
  6. Step 6: Final answer
    x = 12,561.22

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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.