Home / 28,451.20-39,262.48-15,875.92

Finding the Fourth Proportional to 28,451.20, 39,262.48 and 15,875.92

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Solution

The fourth proportional to 28,451.20, 39,262.48 and 15,875.92 is: 21,908.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.20 : 39,262.48 = 15,875.92 : x
  2. Step 2: Convert to fraction form
    28,451.20/39,262.48 = 15,875.92/x
  3. Step 3: Cross multiply
    28,451.20x = 39,262.48 × 15,875.92
  4. Step 4: Simplify right side
    28,451.20x = 623,327,991.48
  5. Step 5: Solve for x
    x = 623,327,991.48/28,451.20
  6. Step 6: Final answer
    x = 21,908.67

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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.