Home / 14,278.91-19,704.65-7,905.38

Finding the Fourth Proportional to 14,278.91, 19,704.65 and 7,905.38

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Solution

The fourth proportional to 14,278.91, 19,704.65 and 7,905.38 is: 10,909.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,278.91 : 19,704.65 = 7,905.38 : x
  2. Step 2: Convert to fraction form
    14,278.91/19,704.65 = 7,905.38/x
  3. Step 3: Cross multiply
    14,278.91x = 19,704.65 × 7,905.38
  4. Step 4: Simplify right side
    14,278.91x = 155,772,607.97
  5. Step 5: Solve for x
    x = 155,772,607.97/14,278.91
  6. Step 6: Final answer
    x = 10,909.28

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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.