Home / 21,927.18-30,259.56-12,495.78

Finding the Fourth Proportional to 21,927.18, 30,259.56 and 12,495.78

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Solution

The fourth proportional to 21,927.18, 30,259.56 and 12,495.78 is: 17,244.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,927.18 : 30,259.56 = 12,495.78 : x
  2. Step 2: Convert to fraction form
    21,927.18/30,259.56 = 12,495.78/x
  3. Step 3: Cross multiply
    21,927.18x = 30,259.56 × 12,495.78
  4. Step 4: Simplify right side
    21,927.18x = 378,116,804.66
  5. Step 5: Solve for x
    x = 378,116,804.66/21,927.18
  6. Step 6: Final answer
    x = 17,244.21

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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.