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Finding the Fourth Proportional to 15,472,719.16, 21,352,864.37 and 8,503,643.74

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Solution

The fourth proportional to 15,472,719.16, 21,352,864.37 and 8,503,643.74 is: 11,735,309.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472,719.16 : 21,352,864.37 = 8,503,643.74 : x
  2. Step 2: Convert to fraction form
    15,472,719.16/21,352,864.37 = 8,503,643.74/x
  3. Step 3: Cross multiply
    15,472,719.16x = 21,352,864.37 × 8,503,643.74
  4. Step 4: Simplify right side
    15,472,719.16x = 181,577,151,431,019.56
  5. Step 5: Solve for x
    x = 181,577,151,431,019.56/15,472,719.16
  6. Step 6: Final answer
    x = 11,735,309.71

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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.