Home / 20,891,631.79-31,338,887.51-8,748,869.23

Finding the Fourth Proportional to 20,891,631.79, 31,338,887.51 and 8,748,869.23

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Solution

The fourth proportional to 20,891,631.79, 31,338,887.51 and 8,748,869.23 is: 13,123,906.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891,631.79 : 31,338,887.51 = 8,748,869.23 : x
  2. Step 2: Convert to fraction form
    20,891,631.79/31,338,887.51 = 8,748,869.23/x
  3. Step 3: Cross multiply
    20,891,631.79x = 31,338,887.51 × 8,748,869.23
  4. Step 4: Simplify right side
    20,891,631.79x = 274,179,828,638,670.34
  5. Step 5: Solve for x
    x = 274,179,828,638,670.34/20,891,631.79
  6. Step 6: Final answer
    x = 13,123,906.81

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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.