Home / 20,775.60-31,157.64-5,980.50

Finding the Fourth Proportional to 20,775.60, 31,157.64 and 5,980.50

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Solution

The fourth proportional to 20,775.60, 31,157.64 and 5,980.50 is: 8,969.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.60 : 31,157.64 = 5,980.50 : x
  2. Step 2: Convert to fraction form
    20,775.60/31,157.64 = 5,980.50/x
  3. Step 3: Cross multiply
    20,775.60x = 31,157.64 × 5,980.50
  4. Step 4: Simplify right side
    20,775.60x = 186,338,266.02
  5. Step 5: Solve for x
    x = 186,338,266.02/20,775.60
  6. Step 6: Final answer
    x = 8,969.09

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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.