Home / 18,727,288.80-28,085,101.20-7,371,218.40

Finding the Fourth Proportional to 18,727,288.80, 28,085,101.20 and 7,371,218.40

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Solution

The fourth proportional to 18,727,288.80, 28,085,101.20 and 7,371,218.40 is: 11,054,532.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727,288.80 : 28,085,101.20 = 7,371,218.40 : x
  2. Step 2: Convert to fraction form
    18,727,288.80/28,085,101.20 = 7,371,218.40/x
  3. Step 3: Cross multiply
    18,727,288.80x = 28,085,101.20 × 7,371,218.40
  4. Step 4: Simplify right side
    18,727,288.80x = 207,021,414,731,302.09
  5. Step 5: Solve for x
    x = 207,021,414,731,302.09/18,727,288.80
  6. Step 6: Final answer
    x = 11,054,532.08

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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.