Home / 12,854,655.86-19,281,760.46-5,178,104.45

Finding the Fourth Proportional to 12,854,655.86, 19,281,760.46 and 5,178,104.45

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Solution

The fourth proportional to 12,854,655.86, 19,281,760.46 and 5,178,104.45 is: 7,767,066.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,854,655.86 : 19,281,760.46 = 5,178,104.45 : x
  2. Step 2: Convert to fraction form
    12,854,655.86/19,281,760.46 = 5,178,104.45/x
  3. Step 3: Cross multiply
    12,854,655.86x = 19,281,760.46 × 5,178,104.45
  4. Step 4: Simplify right side
    12,854,655.86x = 99,842,969,641,760.06
  5. Step 5: Solve for x
    x = 99,842,969,641,760.06/12,854,655.86
  6. Step 6: Final answer
    x = 7,767,066.71

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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.