Home / 21,237.12-31,837.86-9,388.98

Finding the Fourth Proportional to 21,237.12, 31,837.86 and 9,388.98

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Solution

The fourth proportional to 21,237.12, 31,837.86 and 9,388.98 is: 14,075.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,237.12 : 31,837.86 = 9,388.98 : x
  2. Step 2: Convert to fraction form
    21,237.12/31,837.86 = 9,388.98/x
  3. Step 3: Cross multiply
    21,237.12x = 31,837.86 × 9,388.98
  4. Step 4: Simplify right side
    21,237.12x = 298,925,030.78
  5. Step 5: Solve for x
    x = 298,925,030.78/21,237.12
  6. Step 6: Final answer
    x = 14,075.59

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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.