Home / 14,069.28-19,415.60-7,781.60

Finding the Fourth Proportional to 14,069.28, 19,415.60 and 7,781.60

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Solution

The fourth proportional to 14,069.28, 19,415.60 and 7,781.60 is: 10,738.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,069.28 : 19,415.60 = 7,781.60 : x
  2. Step 2: Convert to fraction form
    14,069.28/19,415.60 = 7,781.60/x
  3. Step 3: Cross multiply
    14,069.28x = 19,415.60 × 7,781.60
  4. Step 4: Simplify right side
    14,069.28x = 151,084,432.96
  5. Step 5: Solve for x
    x = 151,084,432.96/14,069.28
  6. Step 6: Final answer
    x = 10,738.60

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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.