Home / 21,137.53-31,709.95-7,098.92

Finding the Fourth Proportional to 21,137.53, 31,709.95 and 7,098.92

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Solution

The fourth proportional to 21,137.53, 31,709.95 and 7,098.92 is: 10,649.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.53 : 31,709.95 = 7,098.92 : x
  2. Step 2: Convert to fraction form
    21,137.53/31,709.95 = 7,098.92/x
  3. Step 3: Cross multiply
    21,137.53x = 31,709.95 × 7,098.92
  4. Step 4: Simplify right side
    21,137.53x = 225,106,398.25
  5. Step 5: Solve for x
    x = 225,106,398.25/21,137.53
  6. Step 6: Final answer
    x = 10,649.61

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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.