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Finding the Fourth Proportional to 28,053.44, 38,713.92 and 15,477.92

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Solution

The fourth proportional to 28,053.44, 38,713.92 and 15,477.92 is: 21,359.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.44 : 38,713.92 = 15,477.92 : x
  2. Step 2: Convert to fraction form
    28,053.44/38,713.92 = 15,477.92/x
  3. Step 3: Cross multiply
    28,053.44x = 38,713.92 × 15,477.92
  4. Step 4: Simplify right side
    28,053.44x = 599,210,956.65
  5. Step 5: Solve for x
    x = 599,210,956.65/28,053.44
  6. Step 6: Final answer
    x = 21,359.62

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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.