Home / 20,693.76-31,022.28-9,000.60

Finding the Fourth Proportional to 20,693.76, 31,022.28 and 9,000.60

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Solution

The fourth proportional to 20,693.76, 31,022.28 and 9,000.60 is: 13,492.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693.76 : 31,022.28 = 9,000.60 : x
  2. Step 2: Convert to fraction form
    20,693.76/31,022.28 = 9,000.60/x
  3. Step 3: Cross multiply
    20,693.76x = 31,022.28 × 9,000.60
  4. Step 4: Simplify right side
    20,693.76x = 279,219,133.37
  5. Step 5: Solve for x
    x = 279,219,133.37/20,693.76
  6. Step 6: Final answer
    x = 13,492.91

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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.