Home / 15,415.20-23,122.80-5,557.50

Finding the Fourth Proportional to 15,415.20, 23,122.80 and 5,557.50

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Solution

The fourth proportional to 15,415.20, 23,122.80 and 5,557.50 is: 8,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,415.20 : 23,122.80 = 5,557.50 : x
  2. Step 2: Convert to fraction form
    15,415.20/23,122.80 = 5,557.50/x
  3. Step 3: Cross multiply
    15,415.20x = 23,122.80 × 5,557.50
  4. Step 4: Simplify right side
    15,415.20x = 128,504,961
  5. Step 5: Solve for x
    x = 128,504,961/15,415.20
  6. Step 6: Final answer
    x = 8,336.25

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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.