Home / 13,290.11-19,896.54-7,726.49

Finding the Fourth Proportional to 13,290.11, 19,896.54 and 7,726.49

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Solution

The fourth proportional to 13,290.11, 19,896.54 and 7,726.49 is: 11,567.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.11 : 19,896.54 = 7,726.49 : x
  2. Step 2: Convert to fraction form
    13,290.11/19,896.54 = 7,726.49/x
  3. Step 3: Cross multiply
    13,290.11x = 19,896.54 × 7,726.49
  4. Step 4: Simplify right side
    13,290.11x = 153,730,317.86
  5. Step 5: Solve for x
    x = 153,730,317.86/13,290.11
  6. Step 6: Final answer
    x = 11,567.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.