Home / 20,755,657.60-28,642,863.06-11,588,628.40

Finding the Fourth Proportional to 20,755,657.60, 28,642,863.06 and 11,588,628.40

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Solution

The fourth proportional to 20,755,657.60, 28,642,863.06 and 11,588,628.40 is: 15,992,338.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755,657.60 : 28,642,863.06 = 11,588,628.40 : x
  2. Step 2: Convert to fraction form
    20,755,657.60/28,642,863.06 = 11,588,628.40/x
  3. Step 3: Cross multiply
    20,755,657.60x = 28,642,863.06 × 11,588,628.40
  4. Step 4: Simplify right side
    20,755,657.60x = 331,931,496,314,426.88
  5. Step 5: Solve for x
    x = 331,931,496,314,426.88/20,755,657.60
  6. Step 6: Final answer
    x = 15,992,338.22

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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.