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Finding the Fourth Proportional to 11,393.36, 15,718.15 and 6,916.39

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Solution

The fourth proportional to 11,393.36, 15,718.15 and 6,916.39 is: 9,541.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,393.36 : 15,718.15 = 6,916.39 : x
  2. Step 2: Convert to fraction form
    11,393.36/15,718.15 = 6,916.39/x
  3. Step 3: Cross multiply
    11,393.36x = 15,718.15 × 6,916.39
  4. Step 4: Simplify right side
    11,393.36x = 108,712,824.83
  5. Step 5: Solve for x
    x = 108,712,824.83/11,393.36
  6. Step 6: Final answer
    x = 9,541.77

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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.