Home / 18,710,402.88-28,067,436-7,778,331.84

Finding the Fourth Proportional to 18,710,402.88, 28,067,436 and 7,778,331.84

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Solution

The fourth proportional to 18,710,402.88, 28,067,436 and 7,778,331.84 is: 11,668,259.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,710,402.88 : 28,067,436 = 7,778,331.84 : x
  2. Step 2: Convert to fraction form
    18,710,402.88/28,067,436 = 7,778,331.84/x
  3. Step 3: Cross multiply
    18,710,402.88x = 28,067,436 × 7,778,331.84
  4. Step 4: Simplify right side
    18,710,402.88x = 218,317,831,105,962.25
  5. Step 5: Solve for x
    x = 218,317,831,105,962.25/18,710,402.88
  6. Step 6: Final answer
    x = 11,668,259.23

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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.