Home / 27,795.78-38,358.63-15,219.72

Finding the Fourth Proportional to 27,795.78, 38,358.63 and 15,219.72

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Solution

The fourth proportional to 27,795.78, 38,358.63 and 15,219.72 is: 21,003.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,795.78 : 38,358.63 = 15,219.72 : x
  2. Step 2: Convert to fraction form
    27,795.78/38,358.63 = 15,219.72/x
  3. Step 3: Cross multiply
    27,795.78x = 38,358.63 × 15,219.72
  4. Step 4: Simplify right side
    27,795.78x = 583,807,608.18
  5. Step 5: Solve for x
    x = 583,807,608.18/27,795.78
  6. Step 6: Final answer
    x = 21,003.46

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1.5x scale

Why These Related Problems?

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