Home / 21,006.27-28,989.32-12,055.41

Finding the Fourth Proportional to 21,006.27, 28,989.32 and 12,055.41

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Solution

The fourth proportional to 21,006.27, 28,989.32 and 12,055.41 is: 16,636.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,006.27 : 28,989.32 = 12,055.41 : x
  2. Step 2: Convert to fraction form
    21,006.27/28,989.32 = 12,055.41/x
  3. Step 3: Cross multiply
    21,006.27x = 28,989.32 × 12,055.41
  4. Step 4: Simplify right side
    21,006.27x = 349,478,077.94
  5. Step 5: Solve for x
    x = 349,478,077.94/21,006.27
  6. Step 6: Final answer
    x = 16,636.85

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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.