Home / 21,099.86-29,125.13-12,150.93

Finding the Fourth Proportional to 21,099.86, 29,125.13 and 12,150.93

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Solution

The fourth proportional to 21,099.86, 29,125.13 and 12,150.93 is: 16,772.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.86 : 29,125.13 = 12,150.93 : x
  2. Step 2: Convert to fraction form
    21,099.86/29,125.13 = 12,150.93/x
  3. Step 3: Cross multiply
    21,099.86x = 29,125.13 × 12,150.93
  4. Step 4: Simplify right side
    21,099.86x = 353,897,415.87
  5. Step 5: Solve for x
    x = 353,897,415.87/21,099.86
  6. Step 6: Final answer
    x = 16,772.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.