Home / 28,363.50-39,141.90-15,788.52

Finding the Fourth Proportional to 28,363.50, 39,141.90 and 15,788.52

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Solution

The fourth proportional to 28,363.50, 39,141.90 and 15,788.52 is: 21,788.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,363.50 : 39,141.90 = 15,788.52 : x
  2. Step 2: Convert to fraction form
    28,363.50/39,141.90 = 15,788.52/x
  3. Step 3: Cross multiply
    28,363.50x = 39,141.90 × 15,788.52
  4. Step 4: Simplify right side
    28,363.50x = 617,992,670.99
  5. Step 5: Solve for x
    x = 617,992,670.99/28,363.50
  6. Step 6: Final answer
    x = 21,788.31

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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.