Home / 28,980.40-43,470.60-11,441.20

Finding the Fourth Proportional to 28,980.40, 43,470.60 and 11,441.20

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Solution

The fourth proportional to 28,980.40, 43,470.60 and 11,441.20 is: 17,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,980.40 : 43,470.60 = 11,441.20 : x
  2. Step 2: Convert to fraction form
    28,980.40/43,470.60 = 11,441.20/x
  3. Step 3: Cross multiply
    28,980.40x = 43,470.60 × 11,441.20
  4. Step 4: Simplify right side
    28,980.40x = 497,355,828.72
  5. Step 5: Solve for x
    x = 497,355,828.72/28,980.40
  6. Step 6: Final answer
    x = 17,161.80

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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.