Home / 28,870,238.96-39,840,928.89-15,817,992.38

Finding the Fourth Proportional to 28,870,238.96, 39,840,928.89 and 15,817,992.38

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Solution

The fourth proportional to 28,870,238.96, 39,840,928.89 and 15,817,992.38 is: 21,828,829.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870,238.96 : 39,840,928.89 = 15,817,992.38 : x
  2. Step 2: Convert to fraction form
    28,870,238.96/39,840,928.89 = 15,817,992.38/x
  3. Step 3: Cross multiply
    28,870,238.96x = 39,840,928.89 × 15,817,992.38
  4. Step 4: Simplify right side
    28,870,238.96x = 630,203,509,594,141.88
  5. Step 5: Solve for x
    x = 630,203,509,594,141.88/28,870,238.96
  6. Step 6: Final answer
    x = 21,828,829.01

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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.