Home / 27,905.10-38,509.73-15,158.28

Finding the Fourth Proportional to 27,905.10, 38,509.73 and 15,158.28

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Solution

The fourth proportional to 27,905.10, 38,509.73 and 15,158.28 is: 20,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,905.10 : 38,509.73 = 15,158.28 : x
  2. Step 2: Convert to fraction form
    27,905.10/38,509.73 = 15,158.28/x
  3. Step 3: Cross multiply
    27,905.10x = 38,509.73 × 15,158.28
  4. Step 4: Simplify right side
    27,905.10x = 583,741,270.06
  5. Step 5: Solve for x
    x = 583,741,270.06/27,905.10
  6. Step 6: Final answer
    x = 20,918.80

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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.