Home / 28,674-42,927.57-21,311.10

Finding the Fourth Proportional to 28,674, 42,927.57 and 21,311.10

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Solution

The fourth proportional to 28,674, 42,927.57 and 21,311.10 is: 31,904.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,674 : 42,927.57 = 21,311.10 : x
  2. Step 2: Convert to fraction form
    28,674/42,927.57 = 21,311.10/x
  3. Step 3: Cross multiply
    28,674x = 42,927.57 × 21,311.10
  4. Step 4: Simplify right side
    28,674x = 914,833,737.03
  5. Step 5: Solve for x
    x = 914,833,737.03/28,674
  6. Step 6: Final answer
    x = 31,904.64

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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.