Home / 13,550.30-18,699.71-7,581.90

Finding the Fourth Proportional to 13,550.30, 18,699.71 and 7,581.90

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Solution

The fourth proportional to 13,550.30, 18,699.71 and 7,581.90 is: 10,463.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,550.30 : 18,699.71 = 7,581.90 : x
  2. Step 2: Convert to fraction form
    13,550.30/18,699.71 = 7,581.90/x
  3. Step 3: Cross multiply
    13,550.30x = 18,699.71 × 7,581.90
  4. Step 4: Simplify right side
    13,550.30x = 141,779,331.25
  5. Step 5: Solve for x
    x = 141,779,331.25/13,550.30
  6. Step 6: Final answer
    x = 10,463.19

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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.