Home / 21,065.29-31,504.98-18,741.60

Finding the Fourth Proportional to 21,065.29, 31,504.98 and 18,741.60

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Solution

The fourth proportional to 21,065.29, 31,504.98 and 18,741.60 is: 28,029.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.29 : 31,504.98 = 18,741.60 : x
  2. Step 2: Convert to fraction form
    21,065.29/31,504.98 = 18,741.60/x
  3. Step 3: Cross multiply
    21,065.29x = 31,504.98 × 18,741.60
  4. Step 4: Simplify right side
    21,065.29x = 590,453,803.45
  5. Step 5: Solve for x
    x = 590,453,803.45/21,065.29
  6. Step 6: Final answer
    x = 28,029.71

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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.