Home / 26,156.70-39,256.65-12,138.30

Finding the Fourth Proportional to 26,156.70, 39,256.65 and 12,138.30

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Solution

The fourth proportional to 26,156.70, 39,256.65 and 12,138.30 is: 18,217.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,156.70 : 39,256.65 = 12,138.30 : x
  2. Step 2: Convert to fraction form
    26,156.70/39,256.65 = 12,138.30/x
  3. Step 3: Cross multiply
    26,156.70x = 39,256.65 × 12,138.30
  4. Step 4: Simplify right side
    26,156.70x = 476,508,994.70
  5. Step 5: Solve for x
    x = 476,508,994.70/26,156.70
  6. Step 6: Final answer
    x = 18,217.47

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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.