Home / 12,454.68-17,172.30-8,681.16

Finding the Fourth Proportional to 12,454.68, 17,172.30 and 8,681.16

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Solution

The fourth proportional to 12,454.68, 17,172.30 and 8,681.16 is: 11,969.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,454.68 : 17,172.30 = 8,681.16 : x
  2. Step 2: Convert to fraction form
    12,454.68/17,172.30 = 8,681.16/x
  3. Step 3: Cross multiply
    12,454.68x = 17,172.30 × 8,681.16
  4. Step 4: Simplify right side
    12,454.68x = 149,075,483.87
  5. Step 5: Solve for x
    x = 149,075,483.87/12,454.68
  6. Step 6: Final answer
    x = 11,969.44

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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.