Home / 28,181.14-38,889.98-15,434.35

Finding the Fourth Proportional to 28,181.14, 38,889.98 and 15,434.35

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Solution

The fourth proportional to 28,181.14, 38,889.98 and 15,434.35 is: 21,299.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.14 : 38,889.98 = 15,434.35 : x
  2. Step 2: Convert to fraction form
    28,181.14/38,889.98 = 15,434.35/x
  3. Step 3: Cross multiply
    28,181.14x = 38,889.98 × 15,434.35
  4. Step 4: Simplify right side
    28,181.14x = 600,241,562.81
  5. Step 5: Solve for x
    x = 600,241,562.81/28,181.14
  6. Step 6: Final answer
    x = 21,299.41

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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.