Home / 15,629.22-21,569.76-8,917.02

Finding the Fourth Proportional to 15,629.22, 21,569.76 and 8,917.02

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Solution

The fourth proportional to 15,629.22, 21,569.76 and 8,917.02 is: 12,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.22 : 21,569.76 = 8,917.02 : x
  2. Step 2: Convert to fraction form
    15,629.22/21,569.76 = 8,917.02/x
  3. Step 3: Cross multiply
    15,629.22x = 21,569.76 × 8,917.02
  4. Step 4: Simplify right side
    15,629.22x = 192,337,981.32
  5. Step 5: Solve for x
    x = 192,337,981.32/15,629.22
  6. Step 6: Final answer
    x = 12,306.31

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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.