Home / 20,880.63-31,325.55-6,090.71

Finding the Fourth Proportional to 20,880.63, 31,325.55 and 6,090.71

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Solution

The fourth proportional to 20,880.63, 31,325.55 and 6,090.71 is: 9,137.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,880.63 : 31,325.55 = 6,090.71 : x
  2. Step 2: Convert to fraction form
    20,880.63/31,325.55 = 6,090.71/x
  3. Step 3: Cross multiply
    20,880.63x = 31,325.55 × 6,090.71
  4. Step 4: Simplify right side
    20,880.63x = 190,794,699.24
  5. Step 5: Solve for x
    x = 190,794,699.24/20,880.63
  6. Step 6: Final answer
    x = 9,137.40

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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.