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Finding the Fourth Proportional to 15,641, 23,439.28 and 12,114.56

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Solution

The fourth proportional to 15,641, 23,439.28 and 12,114.56 is: 18,154.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,641 : 23,439.28 = 12,114.56 : x
  2. Step 2: Convert to fraction form
    15,641/23,439.28 = 12,114.56/x
  3. Step 3: Cross multiply
    15,641x = 23,439.28 × 12,114.56
  4. Step 4: Simplify right side
    15,641x = 283,956,563.92
  5. Step 5: Solve for x
    x = 283,956,563.92/15,641
  6. Step 6: Final answer
    x = 18,154.63

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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.