Home / 21,334.55-31,955.65-15,478.25

Finding the Fourth Proportional to 21,334.55, 31,955.65 and 15,478.25

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Solution

The fourth proportional to 21,334.55, 31,955.65 and 15,478.25 is: 23,183.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,334.55 : 31,955.65 = 15,478.25 : x
  2. Step 2: Convert to fraction form
    21,334.55/31,955.65 = 15,478.25/x
  3. Step 3: Cross multiply
    21,334.55x = 31,955.65 × 15,478.25
  4. Step 4: Simplify right side
    21,334.55x = 494,617,539.61
  5. Step 5: Solve for x
    x = 494,617,539.61/21,334.55
  6. Step 6: Final answer
    x = 23,183.87

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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.