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Finding the Fourth Proportional to 15,619.20, 23,425.28 and 4,523.40

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Solution

The fourth proportional to 15,619.20, 23,425.28 and 4,523.40 is: 6,784.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,619.20 : 23,425.28 = 4,523.40 : x
  2. Step 2: Convert to fraction form
    15,619.20/23,425.28 = 4,523.40/x
  3. Step 3: Cross multiply
    15,619.20x = 23,425.28 × 4,523.40
  4. Step 4: Simplify right side
    15,619.20x = 105,961,888.94
  5. Step 5: Solve for x
    x = 105,961,888.94/15,619.20
  6. Step 6: Final answer
    x = 6,784.08

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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.