Home / 15,710.85-21,680.42-8,637.22

Finding the Fourth Proportional to 15,710.85, 21,680.42 and 8,637.22

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Solution

The fourth proportional to 15,710.85, 21,680.42 and 8,637.22 is: 11,919.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,710.85 : 21,680.42 = 8,637.22 : x
  2. Step 2: Convert to fraction form
    15,710.85/21,680.42 = 8,637.22/x
  3. Step 3: Cross multiply
    15,710.85x = 21,680.42 × 8,637.22
  4. Step 4: Simplify right side
    15,710.85x = 187,258,557.23
  5. Step 5: Solve for x
    x = 187,258,557.23/15,710.85
  6. Step 6: Final answer
    x = 11,919.06

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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.