Home / 28,301.06-42,431.27-13,299.72

Finding the Fourth Proportional to 28,301.06, 42,431.27 and 13,299.72

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Solution

The fourth proportional to 28,301.06, 42,431.27 and 13,299.72 is: 19,940.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,301.06 : 42,431.27 = 13,299.72 : x
  2. Step 2: Convert to fraction form
    28,301.06/42,431.27 = 13,299.72/x
  3. Step 3: Cross multiply
    28,301.06x = 42,431.27 × 13,299.72
  4. Step 4: Simplify right side
    28,301.06x = 564,323,943.75
  5. Step 5: Solve for x
    x = 564,323,943.75/28,301.06
  6. Step 6: Final answer
    x = 19,940.03

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1.5x scale

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.