Home / 15,075.84-20,786.58-9,768.72

Finding the Fourth Proportional to 15,075.84, 20,786.58 and 9,768.72

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Solution

The fourth proportional to 15,075.84, 20,786.58 and 9,768.72 is: 13,469.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.84 : 20,786.58 = 9,768.72 : x
  2. Step 2: Convert to fraction form
    15,075.84/20,786.58 = 9,768.72/x
  3. Step 3: Cross multiply
    15,075.84x = 20,786.58 × 9,768.72
  4. Step 4: Simplify right side
    15,075.84x = 203,058,279.78
  5. Step 5: Solve for x
    x = 203,058,279.78/15,075.84
  6. Step 6: Final answer
    x = 13,469.12

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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.