Home / 12,576,005.20-18,864,007.80-5,386,315.60

Finding the Fourth Proportional to 12,576,005.20, 18,864,007.80 and 5,386,315.60

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Solution

The fourth proportional to 12,576,005.20, 18,864,007.80 and 5,386,315.60 is: 8,079,473.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,576,005.20 : 18,864,007.80 = 5,386,315.60 : x
  2. Step 2: Convert to fraction form
    12,576,005.20/18,864,007.80 = 5,386,315.60/x
  3. Step 3: Cross multiply
    12,576,005.20x = 18,864,007.80 × 5,386,315.60
  4. Step 4: Simplify right side
    12,576,005.20x = 101,607,499,491,661.67
  5. Step 5: Solve for x
    x = 101,607,499,491,661.67/12,576,005.20
  6. Step 6: Final answer
    x = 8,079,473.40

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Similar ratio
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1.5x scale

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.