Home / 13,623.18-20,417.76-7,699.65

Finding the Fourth Proportional to 13,623.18, 20,417.76 and 7,699.65

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Solution

The fourth proportional to 13,623.18, 20,417.76 and 7,699.65 is: 11,539.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.18 : 20,417.76 = 7,699.65 : x
  2. Step 2: Convert to fraction form
    13,623.18/20,417.76 = 7,699.65/x
  3. Step 3: Cross multiply
    13,623.18x = 20,417.76 × 7,699.65
  4. Step 4: Simplify right side
    13,623.18x = 157,209,605.78
  5. Step 5: Solve for x
    x = 157,209,605.78/13,623.18
  6. Step 6: Final answer
    x = 11,539.86

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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.