Home / 28,453.48-39,262.18-15,878.76

Finding the Fourth Proportional to 28,453.48, 39,262.18 and 15,878.76

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Solution

The fourth proportional to 28,453.48, 39,262.18 and 15,878.76 is: 21,910.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.48 : 39,262.18 = 15,878.76 : x
  2. Step 2: Convert to fraction form
    28,453.48/39,262.18 = 15,878.76/x
  3. Step 3: Cross multiply
    28,453.48x = 39,262.18 × 15,878.76
  4. Step 4: Simplify right side
    28,453.48x = 623,434,733.30
  5. Step 5: Solve for x
    x = 623,434,733.30/28,453.48
  6. Step 6: Final answer
    x = 21,910.67

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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.