Home / 20,415.46-30,630.84-13,903.06

Finding the Fourth Proportional to 20,415.46, 30,630.84 and 13,903.06

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Solution

The fourth proportional to 20,415.46, 30,630.84 and 13,903.06 is: 20,859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.46 : 30,630.84 = 13,903.06 : x
  2. Step 2: Convert to fraction form
    20,415.46/30,630.84 = 13,903.06/x
  3. Step 3: Cross multiply
    20,415.46x = 30,630.84 × 13,903.06
  4. Step 4: Simplify right side
    20,415.46x = 425,862,406.37
  5. Step 5: Solve for x
    x = 425,862,406.37/20,415.46
  6. Step 6: Final answer
    x = 20,859.80

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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.