Home / 13,945.66-19,248.33-7,980.77

Finding the Fourth Proportional to 13,945.66, 19,248.33 and 7,980.77

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Solution

The fourth proportional to 13,945.66, 19,248.33 and 7,980.77 is: 11,015.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.66 : 19,248.33 = 7,980.77 : x
  2. Step 2: Convert to fraction form
    13,945.66/19,248.33 = 7,980.77/x
  3. Step 3: Cross multiply
    13,945.66x = 19,248.33 × 7,980.77
  4. Step 4: Simplify right side
    13,945.66x = 153,616,494.61
  5. Step 5: Solve for x
    x = 153,616,494.61/13,945.66
  6. Step 6: Final answer
    x = 11,015.36

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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.