Home / 15,632.43-21,570.74-8,917.66

Finding the Fourth Proportional to 15,632.43, 21,570.74 and 8,917.66

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Solution

The fourth proportional to 15,632.43, 21,570.74 and 8,917.66 is: 12,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,632.43 : 21,570.74 = 8,917.66 : x
  2. Step 2: Convert to fraction form
    15,632.43/21,570.74 = 8,917.66/x
  3. Step 3: Cross multiply
    15,632.43x = 21,570.74 × 8,917.66
  4. Step 4: Simplify right side
    15,632.43x = 192,360,372.83
  5. Step 5: Solve for x
    x = 192,360,372.83/15,632.43
  6. Step 6: Final answer
    x = 12,305.21

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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.