Home / 11,392.40-15,721.64-6,357.04

Finding the Fourth Proportional to 11,392.40, 15,721.64 and 6,357.04

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Solution

The fourth proportional to 11,392.40, 15,721.64 and 6,357.04 is: 8,772.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,392.40 : 15,721.64 = 6,357.04 : x
  2. Step 2: Convert to fraction form
    11,392.40/15,721.64 = 6,357.04/x
  3. Step 3: Cross multiply
    11,392.40x = 15,721.64 × 6,357.04
  4. Step 4: Simplify right side
    11,392.40x = 99,943,094.35
  5. Step 5: Solve for x
    x = 99,943,094.35/11,392.40
  6. Step 6: Final answer
    x = 8,772.79

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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.