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Finding the Fourth Proportional to 20,649,810.90, 30,983,573.70 and 10,552,431.90

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Solution

The fourth proportional to 20,649,810.90, 30,983,573.70 and 10,552,431.90 is: 15,833,174.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649,810.90 : 30,983,573.70 = 10,552,431.90 : x
  2. Step 2: Convert to fraction form
    20,649,810.90/30,983,573.70 = 10,552,431.90/x
  3. Step 3: Cross multiply
    20,649,810.90x = 30,983,573.70 × 10,552,431.90
  4. Step 4: Simplify right side
    20,649,810.90x = 326,952,051,487,881.06
  5. Step 5: Solve for x
    x = 326,952,051,487,881.06/20,649,810.90
  6. Step 6: Final answer
    x = 15,833,174.12

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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.