Home / 20,037.15-30,051.63-12,656.03

Finding the Fourth Proportional to 20,037.15, 30,051.63 and 12,656.03

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Solution

The fourth proportional to 20,037.15, 30,051.63 and 12,656.03 is: 18,981.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,037.15 : 30,051.63 = 12,656.03 : x
  2. Step 2: Convert to fraction form
    20,037.15/30,051.63 = 12,656.03/x
  3. Step 3: Cross multiply
    20,037.15x = 30,051.63 × 12,656.03
  4. Step 4: Simplify right side
    20,037.15x = 380,334,180.57
  5. Step 5: Solve for x
    x = 380,334,180.57/20,037.15
  6. Step 6: Final answer
    x = 18,981.45

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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.