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Finding the Fourth Proportional to 28,357.06, 42,541.74 and 8,635.10

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Solution

The fourth proportional to 28,357.06, 42,541.74 and 8,635.10 is: 12,954.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,357.06 : 42,541.74 = 8,635.10 : x
  2. Step 2: Convert to fraction form
    28,357.06/42,541.74 = 8,635.10/x
  3. Step 3: Cross multiply
    28,357.06x = 42,541.74 × 8,635.10
  4. Step 4: Simplify right side
    28,357.06x = 367,352,179.07
  5. Step 5: Solve for x
    x = 367,352,179.07/28,357.06
  6. Step 6: Final answer
    x = 12,954.52

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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.