Home / 27,905.25-38,509.26-15,330.81

Finding the Fourth Proportional to 27,905.25, 38,509.26 and 15,330.81

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Solution

The fourth proportional to 27,905.25, 38,509.26 and 15,330.81 is: 21,156.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,905.25 : 38,509.26 = 15,330.81 : x
  2. Step 2: Convert to fraction form
    27,905.25/38,509.26 = 15,330.81/x
  3. Step 3: Cross multiply
    27,905.25x = 38,509.26 × 15,330.81
  4. Step 4: Simplify right side
    27,905.25x = 590,378,148.30
  5. Step 5: Solve for x
    x = 590,378,148.30/27,905.25
  6. Step 6: Final answer
    x = 21,156.53

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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.