Home / 31,157.46-42,964.56-20,533.50

Finding the Fourth Proportional to 31,157.46, 42,964.56 and 20,533.50

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Solution

The fourth proportional to 31,157.46, 42,964.56 and 20,533.50 is: 28,314.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,157.46 : 42,964.56 = 20,533.50 : x
  2. Step 2: Convert to fraction form
    31,157.46/42,964.56 = 20,533.50/x
  3. Step 3: Cross multiply
    31,157.46x = 42,964.56 × 20,533.50
  4. Step 4: Simplify right side
    31,157.46x = 882,212,792.76
  5. Step 5: Solve for x
    x = 882,212,792.76/31,157.46
  6. Step 6: Final answer
    x = 28,314.66

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.