Home / 28,125.75-38,813.51-15,550.50

Finding the Fourth Proportional to 28,125.75, 38,813.51 and 15,550.50

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Solution

The fourth proportional to 28,125.75, 38,813.51 and 15,550.50 is: 21,459.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.75 : 38,813.51 = 15,550.50 : x
  2. Step 2: Convert to fraction form
    28,125.75/38,813.51 = 15,550.50/x
  3. Step 3: Cross multiply
    28,125.75x = 38,813.51 × 15,550.50
  4. Step 4: Simplify right side
    28,125.75x = 603,569,487.26
  5. Step 5: Solve for x
    x = 603,569,487.26/28,125.75
  6. Step 6: Final answer
    x = 21,459.68

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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.