Home / 26,431.80-39,653.10-8,903.40

Finding the Fourth Proportional to 26,431.80, 39,653.10 and 8,903.40

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Solution

The fourth proportional to 26,431.80, 39,653.10 and 8,903.40 is: 13,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,431.80 : 39,653.10 = 8,903.40 : x
  2. Step 2: Convert to fraction form
    26,431.80/39,653.10 = 8,903.40/x
  3. Step 3: Cross multiply
    26,431.80x = 39,653.10 × 8,903.40
  4. Step 4: Simplify right side
    26,431.80x = 353,047,410.54
  5. Step 5: Solve for x
    x = 353,047,410.54/26,431.80
  6. Step 6: Final answer
    x = 13,356.92

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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.