Home / 21,175.63-31,769.59-10,091.64

Finding the Fourth Proportional to 21,175.63, 31,769.59 and 10,091.64

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Solution

The fourth proportional to 21,175.63, 31,769.59 and 10,091.64 is: 15,140.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,175.63 : 31,769.59 = 10,091.64 : x
  2. Step 2: Convert to fraction form
    21,175.63/31,769.59 = 10,091.64/x
  3. Step 3: Cross multiply
    21,175.63x = 31,769.59 × 10,091.64
  4. Step 4: Simplify right side
    21,175.63x = 320,607,227.74
  5. Step 5: Solve for x
    x = 320,607,227.74/21,175.63
  6. Step 6: Final answer
    x = 15,140.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.