Home / 20,403,965.80-28,156,563.30-11,695,894.12

Finding the Fourth Proportional to 20,403,965.80, 28,156,563.30 and 11,695,894.12

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Solution

The fourth proportional to 20,403,965.80, 28,156,563.30 and 11,695,894.12 is: 16,139,812.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403,965.80 : 28,156,563.30 = 11,695,894.12 : x
  2. Step 2: Convert to fraction form
    20,403,965.80/28,156,563.30 = 11,695,894.12/x
  3. Step 3: Cross multiply
    20,403,965.80x = 28,156,563.30 × 11,695,894.12
  4. Step 4: Simplify right side
    20,403,965.80x = 329,316,183,139,877.81
  5. Step 5: Solve for x
    x = 329,316,183,139,877.81/20,403,965.80
  6. Step 6: Final answer
    x = 16,139,812.54

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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.