Home / 21,012.32-31,521.72-6,223.52

Finding the Fourth Proportional to 21,012.32, 31,521.72 and 6,223.52

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Solution

The fourth proportional to 21,012.32, 31,521.72 and 6,223.52 is: 9,336.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.32 : 31,521.72 = 6,223.52 : x
  2. Step 2: Convert to fraction form
    21,012.32/31,521.72 = 6,223.52/x
  3. Step 3: Cross multiply
    21,012.32x = 31,521.72 × 6,223.52
  4. Step 4: Simplify right side
    21,012.32x = 196,176,054.85
  5. Step 5: Solve for x
    x = 196,176,054.85/21,012.32
  6. Step 6: Final answer
    x = 9,336.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.