Home / 21,126.47-29,209.26-20,197

Finding the Fourth Proportional to 21,126.47, 29,209.26 and 20,197

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Solution

The fourth proportional to 21,126.47, 29,209.26 and 20,197 is: 27,924.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.47 : 29,209.26 = 20,197 : x
  2. Step 2: Convert to fraction form
    21,126.47/29,209.26 = 20,197/x
  3. Step 3: Cross multiply
    21,126.47x = 29,209.26 × 20,197
  4. Step 4: Simplify right side
    21,126.47x = 589,939,424.22
  5. Step 5: Solve for x
    x = 589,939,424.22/21,126.47
  6. Step 6: Final answer
    x = 27,924.18

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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.