Home / 15,710.56-21,680.96-8,637.16

Finding the Fourth Proportional to 15,710.56, 21,680.96 and 8,637.16

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Solution

The fourth proportional to 15,710.56, 21,680.96 and 8,637.16 is: 11,919.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,710.56 : 21,680.96 = 8,637.16 : x
  2. Step 2: Convert to fraction form
    15,710.56/21,680.96 = 8,637.16/x
  3. Step 3: Cross multiply
    15,710.56x = 21,680.96 × 8,637.16
  4. Step 4: Simplify right side
    15,710.56x = 187,261,920.47
  5. Step 5: Solve for x
    x = 187,261,920.47/15,710.56
  6. Step 6: Final answer
    x = 11,919.49

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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.