Home / 27,905.12-38,509.37-15,158.46

Finding the Fourth Proportional to 27,905.12, 38,509.37 and 15,158.46

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Solution

The fourth proportional to 27,905.12, 38,509.37 and 15,158.46 is: 20,918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,905.12 : 38,509.37 = 15,158.46 : x
  2. Step 2: Convert to fraction form
    27,905.12/38,509.37 = 15,158.46/x
  3. Step 3: Cross multiply
    27,905.12x = 38,509.37 × 15,158.46
  4. Step 4: Simplify right side
    27,905.12x = 583,742,738.88
  5. Step 5: Solve for x
    x = 583,742,738.88/27,905.12
  6. Step 6: Final answer
    x = 20,918.84

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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.