Home / 15,301.71-21,116.30-8,587.35

Finding the Fourth Proportional to 15,301.71, 21,116.30 and 8,587.35

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Solution

The fourth proportional to 15,301.71, 21,116.30 and 8,587.35 is: 11,850.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,301.71 : 21,116.30 = 8,587.35 : x
  2. Step 2: Convert to fraction form
    15,301.71/21,116.30 = 8,587.35/x
  3. Step 3: Cross multiply
    15,301.71x = 21,116.30 × 8,587.35
  4. Step 4: Simplify right side
    15,301.71x = 181,333,015.87
  5. Step 5: Solve for x
    x = 181,333,015.87/15,301.71
  6. Step 6: Final answer
    x = 11,850.51

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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.