Home / 20,800.75-31,188.65-9,541.99

Finding the Fourth Proportional to 20,800.75, 31,188.65 and 9,541.99

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Solution

The fourth proportional to 20,800.75, 31,188.65 and 9,541.99 is: 14,307.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800.75 : 31,188.65 = 9,541.99 : x
  2. Step 2: Convert to fraction form
    20,800.75/31,188.65 = 9,541.99/x
  3. Step 3: Cross multiply
    20,800.75x = 31,188.65 × 9,541.99
  4. Step 4: Simplify right side
    20,800.75x = 297,601,630.47
  5. Step 5: Solve for x
    x = 297,601,630.47/20,800.75
  6. Step 6: Final answer
    x = 14,307.26

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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.