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Finding the Fourth Proportional to 28,599.81, 42,900.02 and 7,823.31

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Solution

The fourth proportional to 28,599.81, 42,900.02 and 7,823.31 is: 11,735.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,599.81 : 42,900.02 = 7,823.31 : x
  2. Step 2: Convert to fraction form
    28,599.81/42,900.02 = 7,823.31/x
  3. Step 3: Cross multiply
    28,599.81x = 42,900.02 × 7,823.31
  4. Step 4: Simplify right side
    28,599.81x = 335,620,155.47
  5. Step 5: Solve for x
    x = 335,620,155.47/28,599.81
  6. Step 6: Final answer
    x = 11,735.05

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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.