Home / 14,266.11-19,687.08-7,978.47

Finding the Fourth Proportional to 14,266.11, 19,687.08 and 7,978.47

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Solution

The fourth proportional to 14,266.11, 19,687.08 and 7,978.47 is: 11,010.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,266.11 : 19,687.08 = 7,978.47 : x
  2. Step 2: Convert to fraction form
    14,266.11/19,687.08 = 7,978.47/x
  3. Step 3: Cross multiply
    14,266.11x = 19,687.08 × 7,978.47
  4. Step 4: Simplify right side
    14,266.11x = 157,072,777.17
  5. Step 5: Solve for x
    x = 157,072,777.17/14,266.11
  6. Step 6: Final answer
    x = 11,010.20

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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.