Home / 18,660,401.40-27,990,602.10-7,889,863.80

Finding the Fourth Proportional to 18,660,401.40, 27,990,602.10 and 7,889,863.80

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Solution

The fourth proportional to 18,660,401.40, 27,990,602.10 and 7,889,863.80 is: 11,834,795.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660,401.40 : 27,990,602.10 = 7,889,863.80 : x
  2. Step 2: Convert to fraction form
    18,660,401.40/27,990,602.10 = 7,889,863.80/x
  3. Step 3: Cross multiply
    18,660,401.40x = 27,990,602.10 × 7,889,863.80
  4. Step 4: Simplify right side
    18,660,401.40x = 220,842,038,248,994
  5. Step 5: Solve for x
    x = 220,842,038,248,994/18,660,401.40
  6. Step 6: Final answer
    x = 11,834,795.70

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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.