Home / 20,755.05-28,631.91-14,042.98

Finding the Fourth Proportional to 20,755.05, 28,631.91 and 14,042.98

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Solution

The fourth proportional to 20,755.05, 28,631.91 and 14,042.98 is: 19,372.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.05 : 28,631.91 = 14,042.98 : x
  2. Step 2: Convert to fraction form
    20,755.05/28,631.91 = 14,042.98/x
  3. Step 3: Cross multiply
    20,755.05x = 28,631.91 × 14,042.98
  4. Step 4: Simplify right side
    20,755.05x = 402,077,339.49
  5. Step 5: Solve for x
    x = 402,077,339.49/20,755.05
  6. Step 6: Final answer
    x = 19,372.51

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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.