Home / 21,099.07-31,632.96-12,777.08

Finding the Fourth Proportional to 21,099.07, 31,632.96 and 12,777.08

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Solution

The fourth proportional to 21,099.07, 31,632.96 and 12,777.08 is: 19,156.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.07 : 31,632.96 = 12,777.08 : x
  2. Step 2: Convert to fraction form
    21,099.07/31,632.96 = 12,777.08/x
  3. Step 3: Cross multiply
    21,099.07x = 31,632.96 × 12,777.08
  4. Step 4: Simplify right side
    21,099.07x = 404,176,860.56
  5. Step 5: Solve for x
    x = 404,176,860.56/21,099.07
  6. Step 6: Final answer
    x = 19,156.15

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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.