Home / 12,813.17-17,679.15-7,777.26

Finding the Fourth Proportional to 12,813.17, 17,679.15 and 7,777.26

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Solution

The fourth proportional to 12,813.17, 17,679.15 and 7,777.26 is: 10,730.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,813.17 : 17,679.15 = 7,777.26 : x
  2. Step 2: Convert to fraction form
    12,813.17/17,679.15 = 7,777.26/x
  3. Step 3: Cross multiply
    12,813.17x = 17,679.15 × 7,777.26
  4. Step 4: Simplify right side
    12,813.17x = 137,495,346.13
  5. Step 5: Solve for x
    x = 137,495,346.13/12,813.17
  6. Step 6: Final answer
    x = 10,730.79

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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.