Home / 13,107.50-18,075.72-8,625.68

Finding the Fourth Proportional to 13,107.50, 18,075.72 and 8,625.68

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Solution

The fourth proportional to 13,107.50, 18,075.72 and 8,625.68 is: 11,895.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.50 : 18,075.72 = 8,625.68 : x
  2. Step 2: Convert to fraction form
    13,107.50/18,075.72 = 8,625.68/x
  3. Step 3: Cross multiply
    13,107.50x = 18,075.72 × 8,625.68
  4. Step 4: Simplify right side
    13,107.50x = 155,915,376.49
  5. Step 5: Solve for x
    x = 155,915,376.49/13,107.50
  6. Step 6: Final answer
    x = 11,895.13

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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.