Home / 28,064.82-38,728.86-15,317.58

Finding the Fourth Proportional to 28,064.82, 38,728.86 and 15,317.58

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Solution

The fourth proportional to 28,064.82, 38,728.86 and 15,317.58 is: 21,137.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,064.82 : 38,728.86 = 15,317.58 : x
  2. Step 2: Convert to fraction form
    28,064.82/38,728.86 = 15,317.58/x
  3. Step 3: Cross multiply
    28,064.82x = 38,728.86 × 15,317.58
  4. Step 4: Simplify right side
    28,064.82x = 593,232,411.36
  5. Step 5: Solve for x
    x = 593,232,411.36/28,064.82
  6. Step 6: Final answer
    x = 21,137.94

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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.