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Finding the Fourth Proportional to 19,601.70, 27,064.02 and 15,056.78

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Solution

The fourth proportional to 19,601.70, 27,064.02 and 15,056.78 is: 20,788.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,601.70 : 27,064.02 = 15,056.78 : x
  2. Step 2: Convert to fraction form
    19,601.70/27,064.02 = 15,056.78/x
  3. Step 3: Cross multiply
    19,601.70x = 27,064.02 × 15,056.78
  4. Step 4: Simplify right side
    19,601.70x = 407,496,995.06
  5. Step 5: Solve for x
    x = 407,496,995.06/19,601.70
  6. Step 6: Final answer
    x = 20,788.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.