Home / 15,122.61-20,864.39-9,152.37

Finding the Fourth Proportional to 15,122.61, 20,864.39 and 9,152.37

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Solution

The fourth proportional to 15,122.61, 20,864.39 and 9,152.37 is: 12,627.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.61 : 20,864.39 = 9,152.37 : x
  2. Step 2: Convert to fraction form
    15,122.61/20,864.39 = 9,152.37/x
  3. Step 3: Cross multiply
    15,122.61x = 20,864.39 × 9,152.37
  4. Step 4: Simplify right side
    15,122.61x = 190,958,571.34
  5. Step 5: Solve for x
    x = 190,958,571.34/15,122.61
  6. Step 6: Final answer
    x = 12,627.36

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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.