Home / 28,961.87-43,263.10-21,001.19

Finding the Fourth Proportional to 28,961.87, 43,263.10 and 21,001.19

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Solution

The fourth proportional to 28,961.87, 43,263.10 and 21,001.19 is: 31,371.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.87 : 43,263.10 = 21,001.19 : x
  2. Step 2: Convert to fraction form
    28,961.87/43,263.10 = 21,001.19/x
  3. Step 3: Cross multiply
    28,961.87x = 43,263.10 × 21,001.19
  4. Step 4: Simplify right side
    28,961.87x = 908,576,393.02
  5. Step 5: Solve for x
    x = 908,576,393.02/28,961.87
  6. Step 6: Final answer
    x = 31,371.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.