Home / 21,011.06-31,521.56-6,219.45

Finding the Fourth Proportional to 21,011.06, 31,521.56 and 6,219.45

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Solution

The fourth proportional to 21,011.06, 31,521.56 and 6,219.45 is: 9,330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011.06 : 31,521.56 = 6,219.45 : x
  2. Step 2: Convert to fraction form
    21,011.06/31,521.56 = 6,219.45/x
  3. Step 3: Cross multiply
    21,011.06x = 31,521.56 × 6,219.45
  4. Step 4: Simplify right side
    21,011.06x = 196,046,735.24
  5. Step 5: Solve for x
    x = 196,046,735.24/21,011.06
  6. Step 6: Final answer
    x = 9,330.64

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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.