Home / 9,315,899.78-12,856,167.01-5,186,210.09

Finding the Fourth Proportional to 9,315,899.78, 12,856,167.01 and 5,186,210.09

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Solution

The fourth proportional to 9,315,899.78, 12,856,167.01 and 5,186,210.09 is: 7,157,095.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315,899.78 : 12,856,167.01 = 5,186,210.09 : x
  2. Step 2: Convert to fraction form
    9,315,899.78/12,856,167.01 = 5,186,210.09/x
  3. Step 3: Cross multiply
    9,315,899.78x = 12,856,167.01 × 5,186,210.09
  4. Step 4: Simplify right side
    9,315,899.78x = 66,674,783,008,189.06
  5. Step 5: Solve for x
    x = 66,674,783,008,189.06/9,315,899.78
  6. Step 6: Final answer
    x = 7,157,095.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.