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Finding the Fourth Proportional to 12,388.92, 18,574.74 and 4,595.64

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Solution

The fourth proportional to 12,388.92, 18,574.74 and 4,595.64 is: 6,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.92 : 18,574.74 = 4,595.64 : x
  2. Step 2: Convert to fraction form
    12,388.92/18,574.74 = 4,595.64/x
  3. Step 3: Cross multiply
    12,388.92x = 18,574.74 × 4,595.64
  4. Step 4: Simplify right side
    12,388.92x = 85,362,818.13
  5. Step 5: Solve for x
    x = 85,362,818.13/12,388.92
  6. Step 6: Final answer
    x = 6,890.26

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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.