Home / 20,392.69-28,141.77-12,434.44

Finding the Fourth Proportional to 20,392.69, 28,141.77 and 12,434.44

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Solution

The fourth proportional to 20,392.69, 28,141.77 and 12,434.44 is: 17,159.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392.69 : 28,141.77 = 12,434.44 : x
  2. Step 2: Convert to fraction form
    20,392.69/28,141.77 = 12,434.44/x
  3. Step 3: Cross multiply
    20,392.69x = 28,141.77 × 12,434.44
  4. Step 4: Simplify right side
    20,392.69x = 349,927,150.56
  5. Step 5: Solve for x
    x = 349,927,150.56/20,392.69
  6. Step 6: Final answer
    x = 17,159.44

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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.