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Finding the Fourth Proportional to 28,599.21, 42,898.21 and 7,822.71

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Solution

The fourth proportional to 28,599.21, 42,898.21 and 7,822.71 is: 11,733.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,599.21 : 42,898.21 = 7,822.71 : x
  2. Step 2: Convert to fraction form
    28,599.21/42,898.21 = 7,822.71/x
  3. Step 3: Cross multiply
    28,599.21x = 42,898.21 × 7,822.71
  4. Step 4: Simplify right side
    28,599.21x = 335,580,256.35
  5. Step 5: Solve for x
    x = 335,580,256.35/28,599.21
  6. Step 6: Final answer
    x = 11,733.90

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1.5x scale

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.