Home / 15,254.70-21,051.36-8,540.30

Finding the Fourth Proportional to 15,254.70, 21,051.36 and 8,540.30

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Solution

The fourth proportional to 15,254.70, 21,051.36 and 8,540.30 is: 11,785.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,254.70 : 21,051.36 = 8,540.30 : x
  2. Step 2: Convert to fraction form
    15,254.70/21,051.36 = 8,540.30/x
  3. Step 3: Cross multiply
    15,254.70x = 21,051.36 × 8,540.30
  4. Step 4: Simplify right side
    15,254.70x = 179,784,929.81
  5. Step 5: Solve for x
    x = 179,784,929.81/15,254.70
  6. Step 6: Final answer
    x = 11,785.54

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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.