Home / 15,521,870.88-21,420,844.56-8,646,357.60

Finding the Fourth Proportional to 15,521,870.88, 21,420,844.56 and 8,646,357.60

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Solution

The fourth proportional to 15,521,870.88, 21,420,844.56 and 8,646,357.60 is: 11,932,342.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,521,870.88 : 21,420,844.56 = 8,646,357.60 : x
  2. Step 2: Convert to fraction form
    15,521,870.88/21,420,844.56 = 8,646,357.60/x
  3. Step 3: Cross multiply
    15,521,870.88x = 21,420,844.56 × 8,646,357.60
  4. Step 4: Simplify right side
    15,521,870.88x = 185,212,282,159,774.62
  5. Step 5: Solve for x
    x = 185,212,282,159,774.62/15,521,870.88
  6. Step 6: Final answer
    x = 11,932,342.67

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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.