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Finding the Fourth Proportional to 12,762.66, 17,621.04 and 9,773.16

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Solution

The fourth proportional to 12,762.66, 17,621.04 and 9,773.16 is: 13,493.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,762.66 : 17,621.04 = 9,773.16 : x
  2. Step 2: Convert to fraction form
    12,762.66/17,621.04 = 9,773.16/x
  3. Step 3: Cross multiply
    12,762.66x = 17,621.04 × 9,773.16
  4. Step 4: Simplify right side
    12,762.66x = 172,213,243.29
  5. Step 5: Solve for x
    x = 172,213,243.29/12,762.66
  6. Step 6: Final answer
    x = 13,493.52

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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.