Home / 21,252.79-31,850.02-13,447.63

Finding the Fourth Proportional to 21,252.79, 31,850.02 and 13,447.63

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Solution

The fourth proportional to 21,252.79, 31,850.02 and 13,447.63 is: 20,152.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,252.79 : 31,850.02 = 13,447.63 : x
  2. Step 2: Convert to fraction form
    21,252.79/31,850.02 = 13,447.63/x
  3. Step 3: Cross multiply
    21,252.79x = 31,850.02 × 13,447.63
  4. Step 4: Simplify right side
    21,252.79x = 428,307,284.45
  5. Step 5: Solve for x
    x = 428,307,284.45/21,252.79
  6. Step 6: Final answer
    x = 20,152.99

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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.