Home / 28,180.89-38,889.63-15,434.10

Finding the Fourth Proportional to 28,180.89, 38,889.63 and 15,434.10

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Solution

The fourth proportional to 28,180.89, 38,889.63 and 15,434.10 is: 21,299.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,180.89 : 38,889.63 = 15,434.10 : x
  2. Step 2: Convert to fraction form
    28,180.89/38,889.63 = 15,434.10/x
  3. Step 3: Cross multiply
    28,180.89x = 38,889.63 × 15,434.10
  4. Step 4: Simplify right side
    28,180.89x = 600,226,438.38
  5. Step 5: Solve for x
    x = 600,226,438.38/28,180.89
  6. Step 6: Final answer
    x = 21,299.06

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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.