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Finding the Fourth Proportional to 15,201,382.02, 20,978,246.61 and 8,674,881.54

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Solution

The fourth proportional to 15,201,382.02, 20,978,246.61 and 8,674,881.54 is: 11,971,530.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,201,382.02 : 20,978,246.61 = 8,674,881.54 : x
  2. Step 2: Convert to fraction form
    15,201,382.02/20,978,246.61 = 8,674,881.54/x
  3. Step 3: Cross multiply
    15,201,382.02x = 20,978,246.61 × 8,674,881.54
  4. Step 4: Simplify right side
    15,201,382.02x = 181,983,804,258,656.56
  5. Step 5: Solve for x
    x = 181,983,804,258,656.56/15,201,382.02
  6. Step 6: Final answer
    x = 11,971,530.22

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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.