Home / 28,491.20-42,693.60-19,246.40

Finding the Fourth Proportional to 28,491.20, 42,693.60 and 19,246.40

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Solution

The fourth proportional to 28,491.20, 42,693.60 and 19,246.40 is: 28,840.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,491.20 : 42,693.60 = 19,246.40 : x
  2. Step 2: Convert to fraction form
    28,491.20/42,693.60 = 19,246.40/x
  3. Step 3: Cross multiply
    28,491.20x = 42,693.60 × 19,246.40
  4. Step 4: Simplify right side
    28,491.20x = 821,698,103.04
  5. Step 5: Solve for x
    x = 821,698,103.04/28,491.20
  6. Step 6: Final answer
    x = 28,840.42

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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.