Home / 20,580.48-28,403.06-12,627.90

Finding the Fourth Proportional to 20,580.48, 28,403.06 and 12,627.90

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Solution

The fourth proportional to 20,580.48, 28,403.06 and 12,627.90 is: 17,427.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.48 : 28,403.06 = 12,627.90 : x
  2. Step 2: Convert to fraction form
    20,580.48/28,403.06 = 12,627.90/x
  3. Step 3: Cross multiply
    20,580.48x = 28,403.06 × 12,627.90
  4. Step 4: Simplify right side
    20,580.48x = 358,670,938.23
  5. Step 5: Solve for x
    x = 358,670,938.23/20,580.48
  6. Step 6: Final answer
    x = 17,427.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.