Home / 20,702,102.49-28,569,018.47-12,005,438.67

Finding the Fourth Proportional to 20,702,102.49, 28,569,018.47 and 12,005,438.67

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Solution

The fourth proportional to 20,702,102.49, 28,569,018.47 and 12,005,438.67 is: 16,567,573.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,102.49 : 28,569,018.47 = 12,005,438.67 : x
  2. Step 2: Convert to fraction form
    20,702,102.49/28,569,018.47 = 12,005,438.67/x
  3. Step 3: Cross multiply
    20,702,102.49x = 28,569,018.47 × 12,005,438.67
  4. Step 4: Simplify right side
    20,702,102.49x = 342,983,599,043,655.06
  5. Step 5: Solve for x
    x = 342,983,599,043,655.06/20,702,102.49
  6. Step 6: Final answer
    x = 16,567,573.23

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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.