Home / 28,409.19-42,612.18-8,686.18

Finding the Fourth Proportional to 28,409.19, 42,612.18 and 8,686.18

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Solution

The fourth proportional to 28,409.19, 42,612.18 and 8,686.18 is: 13,028.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,409.19 : 42,612.18 = 8,686.18 : x
  2. Step 2: Convert to fraction form
    28,409.19/42,612.18 = 8,686.18/x
  3. Step 3: Cross multiply
    28,409.19x = 42,612.18 × 8,686.18
  4. Step 4: Simplify right side
    28,409.19x = 370,137,065.67
  5. Step 5: Solve for x
    x = 370,137,065.67/28,409.19
  6. Step 6: Final answer
    x = 13,028.78

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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.