Home / 26,748.72-40,126.32-12,888

Finding the Fourth Proportional to 26,748.72, 40,126.32 and 12,888

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Solution

The fourth proportional to 26,748.72, 40,126.32 and 12,888 is: 19,333.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,748.72 : 40,126.32 = 12,888 : x
  2. Step 2: Convert to fraction form
    26,748.72/40,126.32 = 12,888/x
  3. Step 3: Cross multiply
    26,748.72x = 40,126.32 × 12,888
  4. Step 4: Simplify right side
    26,748.72x = 517,148,012.16
  5. Step 5: Solve for x
    x = 517,148,012.16/26,748.72
  6. Step 6: Final answer
    x = 19,333.56

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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.