Home / 28,621.51-39,461.39-20,454.87

Finding the Fourth Proportional to 28,621.51, 39,461.39 and 20,454.87

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Solution

The fourth proportional to 28,621.51, 39,461.39 and 20,454.87 is: 28,201.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.51 : 39,461.39 = 20,454.87 : x
  2. Step 2: Convert to fraction form
    28,621.51/39,461.39 = 20,454.87/x
  3. Step 3: Cross multiply
    28,621.51x = 39,461.39 × 20,454.87
  4. Step 4: Simplify right side
    28,621.51x = 807,177,500.19
  5. Step 5: Solve for x
    x = 807,177,500.19/28,621.51
  6. Step 6: Final answer
    x = 28,201.78

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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.