Home / 28,665.60-42,998.40-7,605.60

Finding the Fourth Proportional to 28,665.60, 42,998.40 and 7,605.60

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Solution

The fourth proportional to 28,665.60, 42,998.40 and 7,605.60 is: 11,408.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,665.60 : 42,998.40 = 7,605.60 : x
  2. Step 2: Convert to fraction form
    28,665.60/42,998.40 = 7,605.60/x
  3. Step 3: Cross multiply
    28,665.60x = 42,998.40 × 7,605.60
  4. Step 4: Simplify right side
    28,665.60x = 327,028,631.04
  5. Step 5: Solve for x
    x = 327,028,631.04/28,665.60
  6. Step 6: Final answer
    x = 11,408.40

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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.