Home / 13,620,881.16-18,786,187.31-8,726,561.80

Finding the Fourth Proportional to 13,620,881.16, 18,786,187.31 and 8,726,561.80

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Solution

The fourth proportional to 13,620,881.16, 18,786,187.31 and 8,726,561.80 is: 12,035,845.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620,881.16 : 18,786,187.31 = 8,726,561.80 : x
  2. Step 2: Convert to fraction form
    13,620,881.16/18,786,187.31 = 8,726,561.80/x
  3. Step 3: Cross multiply
    13,620,881.16x = 18,786,187.31 × 8,726,561.80
  4. Step 4: Simplify right side
    13,620,881.16x = 163,938,824,456,492.47
  5. Step 5: Solve for x
    x = 163,938,824,456,492.47/13,620,881.16
  6. Step 6: Final answer
    x = 12,035,845.74

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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.