Home / 28,580.12-39,427.43-18,511.92

Finding the Fourth Proportional to 28,580.12, 39,427.43 and 18,511.92

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Solution

The fourth proportional to 28,580.12, 39,427.43 and 18,511.92 is: 25,537.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,580.12 : 39,427.43 = 18,511.92 : x
  2. Step 2: Convert to fraction form
    28,580.12/39,427.43 = 18,511.92/x
  3. Step 3: Cross multiply
    28,580.12x = 39,427.43 × 18,511.92
  4. Step 4: Simplify right side
    28,580.12x = 729,877,331.40
  5. Step 5: Solve for x
    x = 729,877,331.40/28,580.12
  6. Step 6: Final answer
    x = 25,537.94

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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.