Home / 25,871.28-38,814.48-8,340.72

Finding the Fourth Proportional to 25,871.28, 38,814.48 and 8,340.72

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Solution

The fourth proportional to 25,871.28, 38,814.48 and 8,340.72 is: 12,513.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,871.28 : 38,814.48 = 8,340.72 : x
  2. Step 2: Convert to fraction form
    25,871.28/38,814.48 = 8,340.72/x
  3. Step 3: Cross multiply
    25,871.28x = 38,814.48 × 8,340.72
  4. Step 4: Simplify right side
    25,871.28x = 323,740,709.63
  5. Step 5: Solve for x
    x = 323,740,709.63/25,871.28
  6. Step 6: Final answer
    x = 12,513.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.