Home / 12,854,654.86-19,281,758.96-5,178,103.45

Finding the Fourth Proportional to 12,854,654.86, 19,281,758.96 and 5,178,103.45

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Solution

The fourth proportional to 12,854,654.86, 19,281,758.96 and 5,178,103.45 is: 7,767,065.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,854,654.86 : 19,281,758.96 = 5,178,103.45 : x
  2. Step 2: Convert to fraction form
    12,854,654.86/19,281,758.96 = 5,178,103.45/x
  3. Step 3: Cross multiply
    12,854,654.86x = 19,281,758.96 × 5,178,103.45
  4. Step 4: Simplify right side
    12,854,654.86x = 99,842,942,636,918.34
  5. Step 5: Solve for x
    x = 99,842,942,636,918.34/12,854,654.86
  6. Step 6: Final answer
    x = 7,767,065.22

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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.