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Finding the Fourth Proportional to 15,472,720.22, 21,352,865.84 and 8,503,644.81

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Solution

The fourth proportional to 15,472,720.22, 21,352,865.84 and 8,503,644.81 is: 11,735,311.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472,720.22 : 21,352,865.84 = 8,503,644.81 : x
  2. Step 2: Convert to fraction form
    15,472,720.22/21,352,865.84 = 8,503,644.81/x
  3. Step 3: Cross multiply
    15,472,720.22x = 21,352,865.84 × 8,503,644.81
  4. Step 4: Simplify right side
    15,472,720.22x = 181,577,186,768,312.75
  5. Step 5: Solve for x
    x = 181,577,186,768,312.75/15,472,720.22
  6. Step 6: Final answer
    x = 11,735,311.19

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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.