Home / 28,171,360.88-38,875,776.89-15,781,372.19

Finding the Fourth Proportional to 28,171,360.88, 38,875,776.89 and 15,781,372.19

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Solution

The fourth proportional to 28,171,360.88, 38,875,776.89 and 15,781,372.19 is: 21,777,900.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,171,360.88 : 38,875,776.89 = 15,781,372.19 : x
  2. Step 2: Convert to fraction form
    28,171,360.88/38,875,776.89 = 15,781,372.19/x
  3. Step 3: Cross multiply
    28,171,360.88x = 38,875,776.89 × 15,781,372.19
  4. Step 4: Simplify right side
    28,171,360.88x = 613,513,104,003,204.88
  5. Step 5: Solve for x
    x = 613,513,104,003,204.88/28,171,360.88
  6. Step 6: Final answer
    x = 21,777,900.85

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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.