Home / 13,989.87-19,305.45-8,017.38

Finding the Fourth Proportional to 13,989.87, 19,305.45 and 8,017.38

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Solution

The fourth proportional to 13,989.87, 19,305.45 and 8,017.38 is: 11,063.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.87 : 19,305.45 = 8,017.38 : x
  2. Step 2: Convert to fraction form
    13,989.87/19,305.45 = 8,017.38/x
  3. Step 3: Cross multiply
    13,989.87x = 19,305.45 × 8,017.38
  4. Step 4: Simplify right side
    13,989.87x = 154,779,128.72
  5. Step 5: Solve for x
    x = 154,779,128.72/13,989.87
  6. Step 6: Final answer
    x = 11,063.66

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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.