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Finding the Fourth Proportional to 14,288.60, 19,717.81 and 7,914.93

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Solution

The fourth proportional to 14,288.60, 19,717.81 and 7,914.93 is: 10,922.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.60 : 19,717.81 = 7,914.93 : x
  2. Step 2: Convert to fraction form
    14,288.60/19,717.81 = 7,914.93/x
  3. Step 3: Cross multiply
    14,288.60x = 19,717.81 × 7,914.93
  4. Step 4: Simplify right side
    14,288.60x = 156,065,085.90
  5. Step 5: Solve for x
    x = 156,065,085.90/14,288.60
  6. Step 6: Final answer
    x = 10,922.35

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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.