Home / 10,815.78-14,925.80-6,338.64

Finding the Fourth Proportional to 10,815.78, 14,925.80 and 6,338.64

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Solution

The fourth proportional to 10,815.78, 14,925.80 and 6,338.64 is: 8,747.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.78 : 14,925.80 = 6,338.64 : x
  2. Step 2: Convert to fraction form
    10,815.78/14,925.80 = 6,338.64/x
  3. Step 3: Cross multiply
    10,815.78x = 14,925.80 × 6,338.64
  4. Step 4: Simplify right side
    10,815.78x = 94,609,272.91
  5. Step 5: Solve for x
    x = 94,609,272.91/10,815.78
  6. Step 6: Final answer
    x = 8,747.34

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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.