Home / 28,870,238.46-39,840,928.20-15,817,991.88

Finding the Fourth Proportional to 28,870,238.46, 39,840,928.20 and 15,817,991.88

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Solution

The fourth proportional to 28,870,238.46, 39,840,928.20 and 15,817,991.88 is: 21,828,828.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870,238.46 : 39,840,928.20 = 15,817,991.88 : x
  2. Step 2: Convert to fraction form
    28,870,238.46/39,840,928.20 = 15,817,991.88/x
  3. Step 3: Cross multiply
    28,870,238.46x = 39,840,928.20 × 15,817,991.88
  4. Step 4: Simplify right side
    28,870,238.46x = 630,203,478,759,263.12
  5. Step 5: Solve for x
    x = 630,203,478,759,263.12/28,870,238.46
  6. Step 6: Final answer
    x = 21,828,828.32

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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.