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Finding the Fourth Proportional to 28,967.52, 39,913.44 and 19,519.68

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Solution

The fourth proportional to 28,967.52, 39,913.44 and 19,519.68 is: 26,895.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,967.52 : 39,913.44 = 19,519.68 : x
  2. Step 2: Convert to fraction form
    28,967.52/39,913.44 = 19,519.68/x
  3. Step 3: Cross multiply
    28,967.52x = 39,913.44 × 19,519.68
  4. Step 4: Simplify right side
    28,967.52x = 779,097,576.50
  5. Step 5: Solve for x
    x = 779,097,576.50/28,967.52
  6. Step 6: Final answer
    x = 26,895.56

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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.