Home / 13,501.43-18,631.09-8,465.44

Finding the Fourth Proportional to 13,501.43, 18,631.09 and 8,465.44

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Solution

The fourth proportional to 13,501.43, 18,631.09 and 8,465.44 is: 11,681.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,501.43 : 18,631.09 = 8,465.44 : x
  2. Step 2: Convert to fraction form
    13,501.43/18,631.09 = 8,465.44/x
  3. Step 3: Cross multiply
    13,501.43x = 18,631.09 × 8,465.44
  4. Step 4: Simplify right side
    13,501.43x = 157,720,338.53
  5. Step 5: Solve for x
    x = 157,720,338.53/13,501.43
  6. Step 6: Final answer
    x = 11,681.75

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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.