Home / 28,524.61-39,364.20-15,778.66

Finding the Fourth Proportional to 28,524.61, 39,364.20 and 15,778.66

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Solution

The fourth proportional to 28,524.61, 39,364.20 and 15,778.66 is: 21,774.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,524.61 : 39,364.20 = 15,778.66 : x
  2. Step 2: Convert to fraction form
    28,524.61/39,364.20 = 15,778.66/x
  3. Step 3: Cross multiply
    28,524.61x = 39,364.20 × 15,778.66
  4. Step 4: Simplify right side
    28,524.61x = 621,114,052.26
  5. Step 5: Solve for x
    x = 621,114,052.26/28,524.61
  6. Step 6: Final answer
    x = 21,774.67

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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.