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Finding the Fourth Proportional to 19,228.60, 28,842.90 and 10,480.60

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Solution

The fourth proportional to 19,228.60, 28,842.90 and 10,480.60 is: 15,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,228.60 : 28,842.90 = 10,480.60 : x
  2. Step 2: Convert to fraction form
    19,228.60/28,842.90 = 10,480.60/x
  3. Step 3: Cross multiply
    19,228.60x = 28,842.90 × 10,480.60
  4. Step 4: Simplify right side
    19,228.60x = 302,290,897.74
  5. Step 5: Solve for x
    x = 302,290,897.74/19,228.60
  6. Step 6: Final answer
    x = 15,720.90

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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.