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Finding the Fourth Proportional to 14,352.72, 19,806.56 and 8,065.12

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Solution

The fourth proportional to 14,352.72, 19,806.56 and 8,065.12 is: 11,129.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,352.72 : 19,806.56 = 8,065.12 : x
  2. Step 2: Convert to fraction form
    14,352.72/19,806.56 = 8,065.12/x
  3. Step 3: Cross multiply
    14,352.72x = 19,806.56 × 8,065.12
  4. Step 4: Simplify right side
    14,352.72x = 159,742,283.19
  5. Step 5: Solve for x
    x = 159,742,283.19/14,352.72
  6. Step 6: Final answer
    x = 11,129.76

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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.