Home / 26,431.72-39,648.74-8,663.38

Finding the Fourth Proportional to 26,431.72, 39,648.74 and 8,663.38

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Solution

The fourth proportional to 26,431.72, 39,648.74 and 8,663.38 is: 12,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,431.72 : 39,648.74 = 8,663.38 : x
  2. Step 2: Convert to fraction form
    26,431.72/39,648.74 = 8,663.38/x
  3. Step 3: Cross multiply
    26,431.72x = 39,648.74 × 8,663.38
  4. Step 4: Simplify right side
    26,431.72x = 343,492,101.14
  5. Step 5: Solve for x
    x = 343,492,101.14/26,431.72
  6. Step 6: Final answer
    x = 12,995.45

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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.