Home / 21,866.22-30,175.47-12,434.58

Finding the Fourth Proportional to 21,866.22, 30,175.47 and 12,434.58

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Solution

The fourth proportional to 21,866.22, 30,175.47 and 12,434.58 is: 17,159.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.22 : 30,175.47 = 12,434.58 : x
  2. Step 2: Convert to fraction form
    21,866.22/30,175.47 = 12,434.58/x
  3. Step 3: Cross multiply
    21,866.22x = 30,175.47 × 12,434.58
  4. Step 4: Simplify right side
    21,866.22x = 375,219,295.75
  5. Step 5: Solve for x
    x = 375,219,295.75/21,866.22
  6. Step 6: Final answer
    x = 17,159.77

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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.