Home / 20,887.52-31,336.08-9,201.64

Finding the Fourth Proportional to 20,887.52, 31,336.08 and 9,201.64

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Solution

The fourth proportional to 20,887.52, 31,336.08 and 9,201.64 is: 13,804.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.52 : 31,336.08 = 9,201.64 : x
  2. Step 2: Convert to fraction form
    20,887.52/31,336.08 = 9,201.64/x
  3. Step 3: Cross multiply
    20,887.52x = 31,336.08 × 9,201.64
  4. Step 4: Simplify right side
    20,887.52x = 288,343,327.17
  5. Step 5: Solve for x
    x = 288,343,327.17/20,887.52
  6. Step 6: Final answer
    x = 13,804.57

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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.