Home / 14,278.96-19,704.56-7,905.60

Finding the Fourth Proportional to 14,278.96, 19,704.56 and 7,905.60

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Solution

The fourth proportional to 14,278.96, 19,704.56 and 7,905.60 is: 10,909.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.96 : 19,704.56 = 7,905.60 : x
  2. Step 2: Convert to fraction form
    14,278.96/19,704.56 = 7,905.60/x
  3. Step 3: Cross multiply
    14,278.96x = 19,704.56 × 7,905.60
  4. Step 4: Simplify right side
    14,278.96x = 155,776,369.54
  5. Step 5: Solve for x
    x = 155,776,369.54/14,278.96
  6. Step 6: Final answer
    x = 10,909.50

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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.