Home / 18,663,858-28,006,809.48-7,880,460.84

Finding the Fourth Proportional to 18,663,858, 28,006,809.48 and 7,880,460.84

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Solution

The fourth proportional to 18,663,858, 28,006,809.48 and 7,880,460.84 is: 11,825,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663,858 : 28,006,809.48 = 7,880,460.84 : x
  2. Step 2: Convert to fraction form
    18,663,858/28,006,809.48 = 7,880,460.84/x
  3. Step 3: Cross multiply
    18,663,858x = 28,006,809.48 × 7,880,460.84
  4. Step 4: Simplify right side
    18,663,858x = 220,706,565,360,480.75
  5. Step 5: Solve for x
    x = 220,706,565,360,480.75/18,663,858
  6. Step 6: Final answer
    x = 11,825,345.29

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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.