Home / 15,359,231.56-21,195,811.80-8,390,005.78

Finding the Fourth Proportional to 15,359,231.56, 21,195,811.80 and 8,390,005.78

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Solution

The fourth proportional to 15,359,231.56, 21,195,811.80 and 8,390,005.78 is: 11,578,247.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,359,231.56 : 21,195,811.80 = 8,390,005.78 : x
  2. Step 2: Convert to fraction form
    15,359,231.56/21,195,811.80 = 8,390,005.78/x
  3. Step 3: Cross multiply
    15,359,231.56x = 21,195,811.80 × 8,390,005.78
  4. Step 4: Simplify right side
    15,359,231.56x = 177,832,983,513,792.19
  5. Step 5: Solve for x
    x = 177,832,983,513,792.19/15,359,231.56
  6. Step 6: Final answer
    x = 11,578,247.44

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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.