Home / 13,885.11-19,141.52-9,899.30

Finding the Fourth Proportional to 13,885.11, 19,141.52 and 9,899.30

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Solution

The fourth proportional to 13,885.11, 19,141.52 and 9,899.30 is: 13,646.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.11 : 19,141.52 = 9,899.30 : x
  2. Step 2: Convert to fraction form
    13,885.11/19,141.52 = 9,899.30/x
  3. Step 3: Cross multiply
    13,885.11x = 19,141.52 × 9,899.30
  4. Step 4: Simplify right side
    13,885.11x = 189,487,672.04
  5. Step 5: Solve for x
    x = 189,487,672.04/13,885.11
  6. Step 6: Final answer
    x = 13,646.83

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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.