Home / 21,300.19-31,953.38-6,507.21

Finding the Fourth Proportional to 21,300.19, 31,953.38 and 6,507.21

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Solution

The fourth proportional to 21,300.19, 31,953.38 and 6,507.21 is: 9,761.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,300.19 : 31,953.38 = 6,507.21 : x
  2. Step 2: Convert to fraction form
    21,300.19/31,953.38 = 6,507.21/x
  3. Step 3: Cross multiply
    21,300.19x = 31,953.38 × 6,507.21
  4. Step 4: Simplify right side
    21,300.19x = 207,927,353.87
  5. Step 5: Solve for x
    x = 207,927,353.87/21,300.19
  6. Step 6: Final answer
    x = 9,761.76

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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.