Home / 20,702,140.49-28,569,071-12,005,476.67

Finding the Fourth Proportional to 20,702,140.49, 28,569,071 and 12,005,476.67

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Solution

The fourth proportional to 20,702,140.49, 28,569,071 and 12,005,476.67 is: 16,567,625.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702,140.49 : 28,569,071 = 12,005,476.67 : x
  2. Step 2: Convert to fraction form
    20,702,140.49/28,569,071 = 12,005,476.67/x
  3. Step 3: Cross multiply
    20,702,140.49x = 28,569,071 × 12,005,476.67
  4. Step 4: Simplify right side
    20,702,140.49x = 342,985,315,374,073.56
  5. Step 5: Solve for x
    x = 342,985,315,374,073.56/20,702,140.49
  6. Step 6: Final answer
    x = 16,567,625.73

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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.