Home / 20,768,598.40-31,143,566.40-7,984,854.40

Finding the Fourth Proportional to 20,768,598.40, 31,143,566.40 and 7,984,854.40

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Solution

The fourth proportional to 20,768,598.40, 31,143,566.40 and 7,984,854.40 is: 11,973,694.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768,598.40 : 31,143,566.40 = 7,984,854.40 : x
  2. Step 2: Convert to fraction form
    20,768,598.40/31,143,566.40 = 7,984,854.40/x
  3. Step 3: Cross multiply
    20,768,598.40x = 31,143,566.40 × 7,984,854.40
  4. Step 4: Simplify right side
    20,768,598.40x = 248,676,843,200,732.16
  5. Step 5: Solve for x
    x = 248,676,843,200,732.16/20,768,598.40
  6. Step 6: Final answer
    x = 11,973,694.06

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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.