Home / 15,638.36-21,580.97-8,468.35

Finding the Fourth Proportional to 15,638.36, 21,580.97 and 8,468.35

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Solution

The fourth proportional to 15,638.36, 21,580.97 and 8,468.35 is: 11,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.36 : 21,580.97 = 8,468.35 : x
  2. Step 2: Convert to fraction form
    15,638.36/21,580.97 = 8,468.35/x
  3. Step 3: Cross multiply
    15,638.36x = 21,580.97 × 8,468.35
  4. Step 4: Simplify right side
    15,638.36x = 182,755,111.01
  5. Step 5: Solve for x
    x = 182,755,111.01/15,638.36
  6. Step 6: Final answer
    x = 11,686.34

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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.