Home / 13,619.91-20,402.53-9,929.96

Finding the Fourth Proportional to 13,619.91, 20,402.53 and 9,929.96

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Solution

The fourth proportional to 13,619.91, 20,402.53 and 9,929.96 is: 14,875.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.91 : 20,402.53 = 9,929.96 : x
  2. Step 2: Convert to fraction form
    13,619.91/20,402.53 = 9,929.96/x
  3. Step 3: Cross multiply
    13,619.91x = 20,402.53 × 9,929.96
  4. Step 4: Simplify right side
    13,619.91x = 202,596,179.96
  5. Step 5: Solve for x
    x = 202,596,179.96/13,619.91
  6. Step 6: Final answer
    x = 14,875.00

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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.