Home / 28,861.06-39,803.14-20,348.16

Finding the Fourth Proportional to 28,861.06, 39,803.14 and 20,348.16

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Solution

The fourth proportional to 28,861.06, 39,803.14 and 20,348.16 is: 28,062.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.06 : 39,803.14 = 20,348.16 : x
  2. Step 2: Convert to fraction form
    28,861.06/39,803.14 = 20,348.16/x
  3. Step 3: Cross multiply
    28,861.06x = 39,803.14 × 20,348.16
  4. Step 4: Simplify right side
    28,861.06x = 809,920,661.22
  5. Step 5: Solve for x
    x = 809,920,661.22/28,861.06
  6. Step 6: Final answer
    x = 28,062.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.