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Finding the Fourth Proportional to 19,375.70, 26,742.15 and 12,667.10

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Solution

The fourth proportional to 19,375.70, 26,742.15 and 12,667.10 is: 17,483.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,375.70 : 26,742.15 = 12,667.10 : x
  2. Step 2: Convert to fraction form
    19,375.70/26,742.15 = 12,667.10/x
  3. Step 3: Cross multiply
    19,375.70x = 26,742.15 × 12,667.10
  4. Step 4: Simplify right side
    19,375.70x = 338,745,354.55
  5. Step 5: Solve for x
    x = 338,745,354.55/19,375.70
  6. Step 6: Final answer
    x = 17,483.00

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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.