Home / 26,185.79-36,130.10-15,431.11

Finding the Fourth Proportional to 26,185.79, 36,130.10 and 15,431.11

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Solution

The fourth proportional to 26,185.79, 36,130.10 and 15,431.11 is: 21,291.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,185.79 : 36,130.10 = 15,431.11 : x
  2. Step 2: Convert to fraction form
    26,185.79/36,130.10 = 15,431.11/x
  3. Step 3: Cross multiply
    26,185.79x = 36,130.10 × 15,431.11
  4. Step 4: Simplify right side
    26,185.79x = 557,527,379.93
  5. Step 5: Solve for x
    x = 557,527,379.93/26,185.79
  6. Step 6: Final answer
    x = 21,291.22

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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.