Home / 12,771,616.65-19,171,421.78-7,984,711.05

Finding the Fourth Proportional to 12,771,616.65, 19,171,421.78 and 7,984,711.05

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Solution

The fourth proportional to 12,771,616.65, 19,171,421.78 and 7,984,711.05 is: 11,985,817.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771,616.65 : 19,171,421.78 = 7,984,711.05 : x
  2. Step 2: Convert to fraction form
    12,771,616.65/19,171,421.78 = 7,984,711.05/x
  3. Step 3: Cross multiply
    12,771,616.65x = 19,171,421.78 × 7,984,711.05
  4. Step 4: Simplify right side
    12,771,616.65x = 153,078,263,291,053.09
  5. Step 5: Solve for x
    x = 153,078,263,291,053.09/12,771,616.65
  6. Step 6: Final answer
    x = 11,985,817.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.