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Finding the Fourth Proportional to 13,275.99, 19,892.07 and 7,713.72

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Solution

The fourth proportional to 13,275.99, 19,892.07 and 7,713.72 is: 11,557.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,275.99 : 19,892.07 = 7,713.72 : x
  2. Step 2: Convert to fraction form
    13,275.99/19,892.07 = 7,713.72/x
  3. Step 3: Cross multiply
    13,275.99x = 19,892.07 × 7,713.72
  4. Step 4: Simplify right side
    13,275.99x = 153,441,858.20
  5. Step 5: Solve for x
    x = 153,441,858.20/13,275.99
  6. Step 6: Final answer
    x = 11,557.85

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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.