Home / 9,721.32-13,407.40-6,178.36

Finding the Fourth Proportional to 9,721.32, 13,407.40 and 6,178.36

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Solution

The fourth proportional to 9,721.32, 13,407.40 and 6,178.36 is: 8,521.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.32 : 13,407.40 = 6,178.36 : x
  2. Step 2: Convert to fraction form
    9,721.32/13,407.40 = 6,178.36/x
  3. Step 3: Cross multiply
    9,721.32x = 13,407.40 × 6,178.36
  4. Step 4: Simplify right side
    9,721.32x = 82,835,743.86
  5. Step 5: Solve for x
    x = 82,835,743.86/9,721.32
  6. Step 6: Final answer
    x = 8,521.04

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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.