Home / 13,840.72-19,099.20-8,175.18

Finding the Fourth Proportional to 13,840.72, 19,099.20 and 8,175.18

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Solution

The fourth proportional to 13,840.72, 19,099.20 and 8,175.18 is: 11,281.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.72 : 19,099.20 = 8,175.18 : x
  2. Step 2: Convert to fraction form
    13,840.72/19,099.20 = 8,175.18/x
  3. Step 3: Cross multiply
    13,840.72x = 19,099.20 × 8,175.18
  4. Step 4: Simplify right side
    13,840.72x = 156,139,397.86
  5. Step 5: Solve for x
    x = 156,139,397.86/13,840.72
  6. Step 6: Final answer
    x = 11,281.16

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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.