Home / 21,026.37-31,544.62-7,878.85

Finding the Fourth Proportional to 21,026.37, 31,544.62 and 7,878.85

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Solution

The fourth proportional to 21,026.37, 31,544.62 and 7,878.85 is: 11,820.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.37 : 31,544.62 = 7,878.85 : x
  2. Step 2: Convert to fraction form
    21,026.37/31,544.62 = 7,878.85/x
  3. Step 3: Cross multiply
    21,026.37x = 31,544.62 × 7,878.85
  4. Step 4: Simplify right side
    21,026.37x = 248,535,349.02
  5. Step 5: Solve for x
    x = 248,535,349.02/21,026.37
  6. Step 6: Final answer
    x = 11,820.18

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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.