Home / 28,870,120.71-39,840,765.44-15,817,874.67

Finding the Fourth Proportional to 28,870,120.71, 39,840,765.44 and 15,817,874.67

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Solution

The fourth proportional to 28,870,120.71, 39,840,765.44 and 15,817,874.67 is: 21,828,666.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,870,120.71 : 39,840,765.44 = 15,817,874.67 : x
  2. Step 2: Convert to fraction form
    28,870,120.71/39,840,765.44 = 15,817,874.67/x
  3. Step 3: Cross multiply
    28,870,120.71x = 39,840,765.44 × 15,817,874.67
  4. Step 4: Simplify right side
    28,870,120.71x = 630,196,234,407,698.12
  5. Step 5: Solve for x
    x = 630,196,234,407,698.12/28,870,120.71
  6. Step 6: Final answer
    x = 21,828,666.42

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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.