Home / 13,172.79-19,745.35-8,175.16

Finding the Fourth Proportional to 13,172.79, 19,745.35 and 8,175.16

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Solution

The fourth proportional to 13,172.79, 19,745.35 and 8,175.16 is: 12,254.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.79 : 19,745.35 = 8,175.16 : x
  2. Step 2: Convert to fraction form
    13,172.79/19,745.35 = 8,175.16/x
  3. Step 3: Cross multiply
    13,172.79x = 19,745.35 × 8,175.16
  4. Step 4: Simplify right side
    13,172.79x = 161,421,445.74
  5. Step 5: Solve for x
    x = 161,421,445.74/13,172.79
  6. Step 6: Final answer
    x = 12,254.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.