Home / 38,742.89-58,119.80-12,438.81

Finding the Fourth Proportional to 38,742.89, 58,119.80 and 12,438.81

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Solution

The fourth proportional to 38,742.89, 58,119.80 and 12,438.81 is: 18,659.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,742.89 : 58,119.80 = 12,438.81 : x
  2. Step 2: Convert to fraction form
    38,742.89/58,119.80 = 12,438.81/x
  3. Step 3: Cross multiply
    38,742.89x = 58,119.80 × 12,438.81
  4. Step 4: Simplify right side
    38,742.89x = 722,941,087.24
  5. Step 5: Solve for x
    x = 722,941,087.24/38,742.89
  6. Step 6: Final answer
    x = 18,659.97

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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.