Home / 21,142.14-29,162.09-13,598.01

Finding the Fourth Proportional to 21,142.14, 29,162.09 and 13,598.01

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Solution

The fourth proportional to 21,142.14, 29,162.09 and 13,598.01 is: 18,756.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.14 : 29,162.09 = 13,598.01 : x
  2. Step 2: Convert to fraction form
    21,142.14/29,162.09 = 13,598.01/x
  3. Step 3: Cross multiply
    21,142.14x = 29,162.09 × 13,598.01
  4. Step 4: Simplify right side
    21,142.14x = 396,546,491.10
  5. Step 5: Solve for x
    x = 396,546,491.10/21,142.14
  6. Step 6: Final answer
    x = 18,756.21

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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.