Home / 28,131.15-42,198.95-9,411.29

Finding the Fourth Proportional to 28,131.15, 42,198.95 and 9,411.29

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Solution

The fourth proportional to 28,131.15, 42,198.95 and 9,411.29 is: 14,117.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,131.15 : 42,198.95 = 9,411.29 : x
  2. Step 2: Convert to fraction form
    28,131.15/42,198.95 = 9,411.29/x
  3. Step 3: Cross multiply
    28,131.15x = 42,198.95 × 9,411.29
  4. Step 4: Simplify right side
    28,131.15x = 397,146,368.68
  5. Step 5: Solve for x
    x = 397,146,368.68/28,131.15
  6. Step 6: Final answer
    x = 14,117.67

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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.