Home / 15,301.13-21,134.81-12,622.06

Finding the Fourth Proportional to 15,301.13, 21,134.81 and 12,622.06

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Solution

The fourth proportional to 15,301.13, 21,134.81 and 12,622.06 is: 17,434.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.13 : 21,134.81 = 12,622.06 : x
  2. Step 2: Convert to fraction form
    15,301.13/21,134.81 = 12,622.06/x
  3. Step 3: Cross multiply
    15,301.13x = 21,134.81 × 12,622.06
  4. Step 4: Simplify right side
    15,301.13x = 266,764,671.12
  5. Step 5: Solve for x
    x = 266,764,671.12/15,301.13
  6. Step 6: Final answer
    x = 17,434.31

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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.