Home / 28,077.36-42,117.84-11,428.32

Finding the Fourth Proportional to 28,077.36, 42,117.84 and 11,428.32

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Solution

The fourth proportional to 28,077.36, 42,117.84 and 11,428.32 is: 17,143.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,077.36 : 42,117.84 = 11,428.32 : x
  2. Step 2: Convert to fraction form
    28,077.36/42,117.84 = 11,428.32/x
  3. Step 3: Cross multiply
    28,077.36x = 42,117.84 × 11,428.32
  4. Step 4: Simplify right side
    28,077.36x = 481,336,153.23
  5. Step 5: Solve for x
    x = 481,336,153.23/28,077.36
  6. Step 6: Final answer
    x = 17,143.21

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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.