Home / 21,356.02-31,971.75-12,444.14

Finding the Fourth Proportional to 21,356.02, 31,971.75 and 12,444.14

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Solution

The fourth proportional to 21,356.02, 31,971.75 and 12,444.14 is: 18,629.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,356.02 : 31,971.75 = 12,444.14 : x
  2. Step 2: Convert to fraction form
    21,356.02/31,971.75 = 12,444.14/x
  3. Step 3: Cross multiply
    21,356.02x = 31,971.75 × 12,444.14
  4. Step 4: Simplify right side
    21,356.02x = 397,860,933.05
  5. Step 5: Solve for x
    x = 397,860,933.05/21,356.02
  6. Step 6: Final answer
    x = 18,629.92

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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.