Home / 20,762.66-31,097.16-9,645.95

Finding the Fourth Proportional to 20,762.66, 31,097.16 and 9,645.95

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Solution

The fourth proportional to 20,762.66, 31,097.16 and 9,645.95 is: 14,447.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.66 : 31,097.16 = 9,645.95 : x
  2. Step 2: Convert to fraction form
    20,762.66/31,097.16 = 9,645.95/x
  3. Step 3: Cross multiply
    20,762.66x = 31,097.16 × 9,645.95
  4. Step 4: Simplify right side
    20,762.66x = 299,961,495.02
  5. Step 5: Solve for x
    x = 299,961,495.02/20,762.66
  6. Step 6: Final answer
    x = 14,447.16

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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.