Home / 15,629.75-21,569.13-8,915.55

Finding the Fourth Proportional to 15,629.75, 21,569.13 and 8,915.55

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Solution

The fourth proportional to 15,629.75, 21,569.13 and 8,915.55 is: 12,303.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.75 : 21,569.13 = 8,915.55 : x
  2. Step 2: Convert to fraction form
    15,629.75/21,569.13 = 8,915.55/x
  3. Step 3: Cross multiply
    15,629.75x = 21,569.13 × 8,915.55
  4. Step 4: Simplify right side
    15,629.75x = 192,300,656.97
  5. Step 5: Solve for x
    x = 192,300,656.97/15,629.75
  6. Step 6: Final answer
    x = 12,303.51

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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.