Home / 20,771,108.30-31,162,421.55-8,646,283.10

Finding the Fourth Proportional to 20,771,108.30, 31,162,421.55 and 8,646,283.10

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Solution

The fourth proportional to 20,771,108.30, 31,162,421.55 and 8,646,283.10 is: 12,971,821.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,771,108.30 : 31,162,421.55 = 8,646,283.10 : x
  2. Step 2: Convert to fraction form
    20,771,108.30/31,162,421.55 = 8,646,283.10/x
  3. Step 3: Cross multiply
    20,771,108.30x = 31,162,421.55 × 8,646,283.10
  4. Step 4: Simplify right side
    20,771,108.30x = 269,439,118,802,840.81
  5. Step 5: Solve for x
    x = 269,439,118,802,840.81/20,771,108.30
  6. Step 6: Final answer
    x = 12,971,821.96

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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.