Home / 12,771,613.40-19,171,416.90-7,984,707.80

Finding the Fourth Proportional to 12,771,613.40, 19,171,416.90 and 7,984,707.80

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Solution

The fourth proportional to 12,771,613.40, 19,171,416.90 and 7,984,707.80 is: 11,985,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771,613.40 : 19,171,416.90 = 7,984,707.80 : x
  2. Step 2: Convert to fraction form
    12,771,613.40/19,171,416.90 = 7,984,707.80/x
  3. Step 3: Cross multiply
    12,771,613.40x = 19,171,416.90 × 7,984,707.80
  4. Step 4: Simplify right side
    12,771,613.40x = 153,078,162,058,481.81
  5. Step 5: Solve for x
    x = 153,078,162,058,481.81/12,771,613.40
  6. Step 6: Final answer
    x = 11,985,812.38

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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.