Home / 13,617.06-18,789.12-7,648.98

Finding the Fourth Proportional to 13,617.06, 18,789.12 and 7,648.98

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Solution

The fourth proportional to 13,617.06, 18,789.12 and 7,648.98 is: 10,554.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.06 : 18,789.12 = 7,648.98 : x
  2. Step 2: Convert to fraction form
    13,617.06/18,789.12 = 7,648.98/x
  3. Step 3: Cross multiply
    13,617.06x = 18,789.12 × 7,648.98
  4. Step 4: Simplify right side
    13,617.06x = 143,717,603.10
  5. Step 5: Solve for x
    x = 143,717,603.10/13,617.06
  6. Step 6: Final answer
    x = 10,554.23

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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.