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Finding the Fourth Proportional to 12,490.56, 18,735.66 and 6,941.16

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Solution

The fourth proportional to 12,490.56, 18,735.66 and 6,941.16 is: 10,411.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,490.56 : 18,735.66 = 6,941.16 : x
  2. Step 2: Convert to fraction form
    12,490.56/18,735.66 = 6,941.16/x
  3. Step 3: Cross multiply
    12,490.56x = 18,735.66 × 6,941.16
  4. Step 4: Simplify right side
    12,490.56x = 130,047,213.77
  5. Step 5: Solve for x
    x = 130,047,213.77/12,490.56
  6. Step 6: Final answer
    x = 10,411.64

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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.