Home / 28,736.88-39,671.28-19,192.56

Finding the Fourth Proportional to 28,736.88, 39,671.28 and 19,192.56

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Solution

The fourth proportional to 28,736.88, 39,671.28 and 19,192.56 is: 26,495.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,736.88 : 39,671.28 = 19,192.56 : x
  2. Step 2: Convert to fraction form
    28,736.88/39,671.28 = 19,192.56/x
  3. Step 3: Cross multiply
    28,736.88x = 39,671.28 × 19,192.56
  4. Step 4: Simplify right side
    28,736.88x = 761,393,421.68
  5. Step 5: Solve for x
    x = 761,393,421.68/28,736.88
  6. Step 6: Final answer
    x = 26,495.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.