Home / 21,146.31-31,723.65-9,459.63

Finding the Fourth Proportional to 21,146.31, 31,723.65 and 9,459.63

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Solution

The fourth proportional to 21,146.31, 31,723.65 and 9,459.63 is: 14,191.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.31 : 31,723.65 = 9,459.63 : x
  2. Step 2: Convert to fraction form
    21,146.31/31,723.65 = 9,459.63/x
  3. Step 3: Cross multiply
    21,146.31x = 31,723.65 × 9,459.63
  4. Step 4: Simplify right side
    21,146.31x = 300,093,991.25
  5. Step 5: Solve for x
    x = 300,093,991.25/21,146.31
  6. Step 6: Final answer
    x = 14,191.32

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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.