Home / 20,781,650.85-31,172,476.28-6,403,438.05

Finding the Fourth Proportional to 20,781,650.85, 31,172,476.28 and 6,403,438.05

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Solution

The fourth proportional to 20,781,650.85, 31,172,476.28 and 6,403,438.05 is: 9,605,157.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,650.85 : 31,172,476.28 = 6,403,438.05 : x
  2. Step 2: Convert to fraction form
    20,781,650.85/31,172,476.28 = 6,403,438.05/x
  3. Step 3: Cross multiply
    20,781,650.85x = 31,172,476.28 × 6,403,438.05
  4. Step 4: Simplify right side
    20,781,650.85x = 199,611,020,692,057.25
  5. Step 5: Solve for x
    x = 199,611,020,692,057.25/20,781,650.85
  6. Step 6: Final answer
    x = 9,605,157.08

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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.