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Finding the Fourth Proportional to 14,378.70, 19,837.47 and 8,091.08

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Solution

The fourth proportional to 14,378.70, 19,837.47 and 8,091.08 is: 11,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,378.70 : 19,837.47 = 8,091.08 : x
  2. Step 2: Convert to fraction form
    14,378.70/19,837.47 = 8,091.08/x
  3. Step 3: Cross multiply
    14,378.70x = 19,837.47 × 8,091.08
  4. Step 4: Simplify right side
    14,378.70x = 160,506,556.77
  5. Step 5: Solve for x
    x = 160,506,556.77/14,378.70
  6. Step 6: Final answer
    x = 11,162.80

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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.