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Finding the Fourth Proportional to 14,387.70, 19,855.50 and 7,927.04

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Solution

The fourth proportional to 14,387.70, 19,855.50 and 7,927.04 is: 10,939.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,387.70 : 19,855.50 = 7,927.04 : x
  2. Step 2: Convert to fraction form
    14,387.70/19,855.50 = 7,927.04/x
  3. Step 3: Cross multiply
    14,387.70x = 19,855.50 × 7,927.04
  4. Step 4: Simplify right side
    14,387.70x = 157,395,342.72
  5. Step 5: Solve for x
    x = 157,395,342.72/14,387.70
  6. Step 6: Final answer
    x = 10,939.58

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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.