Home / 21,107.48-29,115.63-13,937.46

Finding the Fourth Proportional to 21,107.48, 29,115.63 and 13,937.46

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Solution

The fourth proportional to 21,107.48, 29,115.63 and 13,937.46 is: 19,225.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.48 : 29,115.63 = 13,937.46 : x
  2. Step 2: Convert to fraction form
    21,107.48/29,115.63 = 13,937.46/x
  3. Step 3: Cross multiply
    21,107.48x = 29,115.63 × 13,937.46
  4. Step 4: Simplify right side
    21,107.48x = 405,797,928.50
  5. Step 5: Solve for x
    x = 405,797,928.50/21,107.48
  6. Step 6: Final answer
    x = 19,225.31

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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.