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Finding the Fourth Proportional to 15,619.76, 23,400.22 and 7,713.02

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Solution

The fourth proportional to 15,619.76, 23,400.22 and 7,713.02 is: 11,555.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.76 : 23,400.22 = 7,713.02 : x
  2. Step 2: Convert to fraction form
    15,619.76/23,400.22 = 7,713.02/x
  3. Step 3: Cross multiply
    15,619.76x = 23,400.22 × 7,713.02
  4. Step 4: Simplify right side
    15,619.76x = 180,486,322.81
  5. Step 5: Solve for x
    x = 180,486,322.81/15,619.76
  6. Step 6: Final answer
    x = 11,555.00

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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.