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Finding the Fourth Proportional to 27,345.60, 41,018.40 and 20,784.60

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Solution

The fourth proportional to 27,345.60, 41,018.40 and 20,784.60 is: 31,176.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,345.60 : 41,018.40 = 20,784.60 : x
  2. Step 2: Convert to fraction form
    27,345.60/41,018.40 = 20,784.60/x
  3. Step 3: Cross multiply
    27,345.60x = 41,018.40 × 20,784.60
  4. Step 4: Simplify right side
    27,345.60x = 852,551,036.64
  5. Step 5: Solve for x
    x = 852,551,036.64/27,345.60
  6. Step 6: Final answer
    x = 31,176.90

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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.