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Finding the Fourth Proportional to 13,225.91, 19,818.92 and 7,955.16

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Solution

The fourth proportional to 13,225.91, 19,818.92 and 7,955.16 is: 11,920.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,225.91 : 19,818.92 = 7,955.16 : x
  2. Step 2: Convert to fraction form
    13,225.91/19,818.92 = 7,955.16/x
  3. Step 3: Cross multiply
    13,225.91x = 19,818.92 × 7,955.16
  4. Step 4: Simplify right side
    13,225.91x = 157,662,699.52
  5. Step 5: Solve for x
    x = 157,662,699.52/13,225.91
  6. Step 6: Final answer
    x = 11,920.75

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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.