Home / 12,381.72-17,084.97-7,075.50

Finding the Fourth Proportional to 12,381.72, 17,084.97 and 7,075.50

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Solution

The fourth proportional to 12,381.72, 17,084.97 and 7,075.50 is: 9,763.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,381.72 : 17,084.97 = 7,075.50 : x
  2. Step 2: Convert to fraction form
    12,381.72/17,084.97 = 7,075.50/x
  3. Step 3: Cross multiply
    12,381.72x = 17,084.97 × 7,075.50
  4. Step 4: Simplify right side
    12,381.72x = 120,884,705.24
  5. Step 5: Solve for x
    x = 120,884,705.24/12,381.72
  6. Step 6: Final answer
    x = 9,763.16

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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.