Home / 20,890.60-31,326.72-9,801.16

Finding the Fourth Proportional to 20,890.60, 31,326.72 and 9,801.16

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Solution

The fourth proportional to 20,890.60, 31,326.72 and 9,801.16 is: 14,697.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890.60 : 31,326.72 = 9,801.16 : x
  2. Step 2: Convert to fraction form
    20,890.60/31,326.72 = 9,801.16/x
  3. Step 3: Cross multiply
    20,890.60x = 31,326.72 × 9,801.16
  4. Step 4: Simplify right side
    20,890.60x = 307,038,195.00
  5. Step 5: Solve for x
    x = 307,038,195.00/20,890.60
  6. Step 6: Final answer
    x = 14,697.43

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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.