Home / 12,277.31-16,961.20-9,915.35

Finding the Fourth Proportional to 12,277.31, 16,961.20 and 9,915.35

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Solution

The fourth proportional to 12,277.31, 16,961.20 and 9,915.35 is: 13,698.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,277.31 : 16,961.20 = 9,915.35 : x
  2. Step 2: Convert to fraction form
    12,277.31/16,961.20 = 9,915.35/x
  3. Step 3: Cross multiply
    12,277.31x = 16,961.20 × 9,915.35
  4. Step 4: Simplify right side
    12,277.31x = 168,176,124.83
  5. Step 5: Solve for x
    x = 168,176,124.83/12,277.31
  6. Step 6: Final answer
    x = 13,698.13

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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.