Home / 20,369,028.88-28,108,699.14-11,201,671.72

Finding the Fourth Proportional to 20,369,028.88, 28,108,699.14 and 11,201,671.72

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Solution

The fourth proportional to 20,369,028.88, 28,108,699.14 and 11,201,671.72 is: 15,457,998.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369,028.88 : 28,108,699.14 = 11,201,671.72 : x
  2. Step 2: Convert to fraction form
    20,369,028.88/28,108,699.14 = 11,201,671.72/x
  3. Step 3: Cross multiply
    20,369,028.88x = 28,108,699.14 × 11,201,671.72
  4. Step 4: Simplify right side
    20,369,028.88x = 314,864,420,242,526.38
  5. Step 5: Solve for x
    x = 314,864,420,242,526.38/20,369,028.88
  6. Step 6: Final answer
    x = 15,457,998.62

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1.5x scale

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.