Home / 21,187,192.07-31,782,329.59-8,878,800.67

Finding the Fourth Proportional to 21,187,192.07, 31,782,329.59 and 8,878,800.67

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Solution

The fourth proportional to 21,187,192.07, 31,782,329.59 and 8,878,800.67 is: 13,318,846.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187,192.07 : 31,782,329.59 = 8,878,800.67 : x
  2. Step 2: Convert to fraction form
    21,187,192.07/31,782,329.59 = 8,878,800.67/x
  3. Step 3: Cross multiply
    21,187,192.07x = 31,782,329.59 × 8,878,800.67
  4. Step 4: Simplify right side
    21,187,192.07x = 282,188,969,351,623.38
  5. Step 5: Solve for x
    x = 282,188,969,351,623.38/21,187,192.07
  6. Step 6: Final answer
    x = 13,318,846.99

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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.