Home / 12,520.74-17,243.76-9,677.64

Finding the Fourth Proportional to 12,520.74, 17,243.76 and 9,677.64

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Solution

The fourth proportional to 12,520.74, 17,243.76 and 9,677.64 is: 13,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.74 : 17,243.76 = 9,677.64 : x
  2. Step 2: Convert to fraction form
    12,520.74/17,243.76 = 9,677.64/x
  3. Step 3: Cross multiply
    12,520.74x = 17,243.76 × 9,677.64
  4. Step 4: Simplify right side
    12,520.74x = 166,878,901.53
  5. Step 5: Solve for x
    x = 166,878,901.53/12,520.74
  6. Step 6: Final answer
    x = 13,328.20

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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.