Home / 20,381,468.37-28,128,047.16-11,680,450.53

Finding the Fourth Proportional to 20,381,468.37, 28,128,047.16 and 11,680,450.53

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Solution

The fourth proportional to 20,381,468.37, 28,128,047.16 and 11,680,450.53 is: 16,119,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,381,468.37 : 28,128,047.16 = 11,680,450.53 : x
  2. Step 2: Convert to fraction form
    20,381,468.37/28,128,047.16 = 11,680,450.53/x
  3. Step 3: Cross multiply
    20,381,468.37x = 28,128,047.16 × 11,680,450.53
  4. Step 4: Simplify right side
    20,381,468.37x = 328,548,263,357,887
  5. Step 5: Solve for x
    x = 328,548,263,357,887/20,381,468.37
  6. Step 6: Final answer
    x = 16,119,950.60

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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.