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Finding the Fourth Proportional to 12,559.74, 18,809.54 and 8,152.94

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Solution

The fourth proportional to 12,559.74, 18,809.54 and 8,152.94 is: 12,209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,559.74 : 18,809.54 = 8,152.94 : x
  2. Step 2: Convert to fraction form
    12,559.74/18,809.54 = 8,152.94/x
  3. Step 3: Cross multiply
    12,559.74x = 18,809.54 × 8,152.94
  4. Step 4: Simplify right side
    12,559.74x = 153,352,916.24
  5. Step 5: Solve for x
    x = 153,352,916.24/12,559.74
  6. Step 6: Final answer
    x = 12,209.88

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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.