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Finding the Fourth Proportional to 10,395.96, 15,566.00 and 7,918.98

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Solution

The fourth proportional to 10,395.96, 15,566.00 and 7,918.98 is: 11,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,395.96 : 15,566.00 = 7,918.98 : x
  2. Step 2: Convert to fraction form
    10,395.96/15,566.00 = 7,918.98/x
  3. Step 3: Cross multiply
    10,395.96x = 15,566.00 × 7,918.98
  4. Step 4: Simplify right side
    10,395.96x = 123,266,803.09
  5. Step 5: Solve for x
    x = 123,266,803.09/10,395.96
  6. Step 6: Final answer
    x = 11,857.18

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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.