Home / 28,557.88-39,408.59-15,810.17

Finding the Fourth Proportional to 28,557.88, 39,408.59 and 15,810.17

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Solution

The fourth proportional to 28,557.88, 39,408.59 and 15,810.17 is: 21,817.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,557.88 : 39,408.59 = 15,810.17 : x
  2. Step 2: Convert to fraction form
    28,557.88/39,408.59 = 15,810.17/x
  3. Step 3: Cross multiply
    28,557.88x = 39,408.59 × 15,810.17
  4. Step 4: Simplify right side
    28,557.88x = 623,056,571.52
  5. Step 5: Solve for x
    x = 623,056,571.52/28,557.88
  6. Step 6: Final answer
    x = 21,817.32

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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.