Home / 38,835.36-58,238.20-13,870.72

Finding the Fourth Proportional to 38,835.36, 58,238.20 and 13,870.72

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Solution

The fourth proportional to 38,835.36, 58,238.20 and 13,870.72 is: 20,800.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,835.36 : 58,238.20 = 13,870.72 : x
  2. Step 2: Convert to fraction form
    38,835.36/58,238.20 = 13,870.72/x
  3. Step 3: Cross multiply
    38,835.36x = 58,238.20 × 13,870.72
  4. Step 4: Simplify right side
    38,835.36x = 807,805,765.50
  5. Step 5: Solve for x
    x = 807,805,765.50/38,835.36
  6. Step 6: Final answer
    x = 20,800.78

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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.