Home / 28,809.10-43,258.20-15,687.10

Finding the Fourth Proportional to 28,809.10, 43,258.20 and 15,687.10

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Solution

The fourth proportional to 28,809.10, 43,258.20 and 15,687.10 is: 23,554.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,809.10 : 43,258.20 = 15,687.10 : x
  2. Step 2: Convert to fraction form
    28,809.10/43,258.20 = 15,687.10/x
  3. Step 3: Cross multiply
    28,809.10x = 43,258.20 × 15,687.10
  4. Step 4: Simplify right side
    28,809.10x = 678,595,709.22
  5. Step 5: Solve for x
    x = 678,595,709.22/28,809.10
  6. Step 6: Final answer
    x = 23,554.91

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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.