Home / 27,999.10-42,021.60-27,780.40

Finding the Fourth Proportional to 27,999.10, 42,021.60 and 27,780.40

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Solution

The fourth proportional to 27,999.10, 42,021.60 and 27,780.40 is: 41,693.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.10 : 42,021.60 = 27,780.40 : x
  2. Step 2: Convert to fraction form
    27,999.10/42,021.60 = 27,780.40/x
  3. Step 3: Cross multiply
    27,999.10x = 42,021.60 × 27,780.40
  4. Step 4: Simplify right side
    27,999.10x = 1,167,376,856.64
  5. Step 5: Solve for x
    x = 1,167,376,856.64/27,999.10
  6. Step 6: Final answer
    x = 41,693.37

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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.