Home / 28,803.11-43,152.03-20,886.01

Finding the Fourth Proportional to 28,803.11, 43,152.03 and 20,886.01

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Solution

The fourth proportional to 28,803.11, 43,152.03 and 20,886.01 is: 31,290.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,803.11 : 43,152.03 = 20,886.01 : x
  2. Step 2: Convert to fraction form
    28,803.11/43,152.03 = 20,886.01/x
  3. Step 3: Cross multiply
    28,803.11x = 43,152.03 × 20,886.01
  4. Step 4: Simplify right side
    28,803.11x = 901,273,730.10
  5. Step 5: Solve for x
    x = 901,273,730.10/28,803.11
  6. Step 6: Final answer
    x = 31,290.85

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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.