Home / 28,435.10-42,660.40-8,713.22

Finding the Fourth Proportional to 28,435.10, 42,660.40 and 8,713.22

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Solution

The fourth proportional to 28,435.10, 42,660.40 and 8,713.22 is: 13,072.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,435.10 : 42,660.40 = 8,713.22 : x
  2. Step 2: Convert to fraction form
    28,435.10/42,660.40 = 8,713.22/x
  3. Step 3: Cross multiply
    28,435.10x = 42,660.40 × 8,713.22
  4. Step 4: Simplify right side
    28,435.10x = 371,709,450.49
  5. Step 5: Solve for x
    x = 371,709,450.49/28,435.10
  6. Step 6: Final answer
    x = 13,072.20

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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.