Home / 10,212.44-15,307.74-5,280.80

Finding the Fourth Proportional to 10,212.44, 15,307.74 and 5,280.80

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Solution

The fourth proportional to 10,212.44, 15,307.74 and 5,280.80 is: 7,915.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.44 : 15,307.74 = 5,280.80 : x
  2. Step 2: Convert to fraction form
    10,212.44/15,307.74 = 5,280.80/x
  3. Step 3: Cross multiply
    10,212.44x = 15,307.74 × 5,280.80
  4. Step 4: Simplify right side
    10,212.44x = 80,837,113.39
  5. Step 5: Solve for x
    x = 80,837,113.39/10,212.44
  6. Step 6: Final answer
    x = 7,915.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.