Home / 21,160.13-29,192.67-13,605.26

Finding the Fourth Proportional to 21,160.13, 29,192.67 and 13,605.26

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Solution

The fourth proportional to 21,160.13, 29,192.67 and 13,605.26 is: 18,769.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.13 : 29,192.67 = 13,605.26 : x
  2. Step 2: Convert to fraction form
    21,160.13/29,192.67 = 13,605.26/x
  3. Step 3: Cross multiply
    21,160.13x = 29,192.67 × 13,605.26
  4. Step 4: Simplify right side
    21,160.13x = 397,173,719.48
  5. Step 5: Solve for x
    x = 397,173,719.48/21,160.13
  6. Step 6: Final answer
    x = 18,769.91

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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.