Home / 13,890.96-19,169.55-7,603.38

Finding the Fourth Proportional to 13,890.96, 19,169.55 and 7,603.38

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Solution

The fourth proportional to 13,890.96, 19,169.55 and 7,603.38 is: 10,492.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.96 : 19,169.55 = 7,603.38 : x
  2. Step 2: Convert to fraction form
    13,890.96/19,169.55 = 7,603.38/x
  3. Step 3: Cross multiply
    13,890.96x = 19,169.55 × 7,603.38
  4. Step 4: Simplify right side
    13,890.96x = 145,753,373.08
  5. Step 5: Solve for x
    x = 145,753,373.08/13,890.96
  6. Step 6: Final answer
    x = 10,492.68

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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.