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Finding the Fourth Proportional to 11,356.79, 15,669.23 and 6,818.30

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Solution

The fourth proportional to 11,356.79, 15,669.23 and 6,818.30 is: 9,407.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,356.79 : 15,669.23 = 6,818.30 : x
  2. Step 2: Convert to fraction form
    11,356.79/15,669.23 = 6,818.30/x
  3. Step 3: Cross multiply
    11,356.79x = 15,669.23 × 6,818.30
  4. Step 4: Simplify right side
    11,356.79x = 106,837,476.82
  5. Step 5: Solve for x
    x = 106,837,476.82/11,356.79
  6. Step 6: Final answer
    x = 9,407.37

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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.