Home / 28,503.75-39,335.18-15,928.50

Finding the Fourth Proportional to 28,503.75, 39,335.18 and 15,928.50

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Solution

The fourth proportional to 28,503.75, 39,335.18 and 15,928.50 is: 21,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,503.75 : 39,335.18 = 15,928.50 : x
  2. Step 2: Convert to fraction form
    28,503.75/39,335.18 = 15,928.50/x
  3. Step 3: Cross multiply
    28,503.75x = 39,335.18 × 15,928.50
  4. Step 4: Simplify right side
    28,503.75x = 626,550,334.99
  5. Step 5: Solve for x
    x = 626,550,334.99/28,503.75
  6. Step 6: Final answer
    x = 21,981.33

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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.