Home / 15,407-21,261.66-9,821.24

Finding the Fourth Proportional to 15,407, 21,261.66 and 9,821.24

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Solution

The fourth proportional to 15,407, 21,261.66 and 9,821.24 is: 13,553.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,407 : 21,261.66 = 9,821.24 : x
  2. Step 2: Convert to fraction form
    15,407/21,261.66 = 9,821.24/x
  3. Step 3: Cross multiply
    15,407x = 21,261.66 × 9,821.24
  4. Step 4: Simplify right side
    15,407x = 208,815,865.66
  5. Step 5: Solve for x
    x = 208,815,865.66/15,407
  6. Step 6: Final answer
    x = 13,553.31

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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.