Home / 20,865.13-31,311.27-9,030.44

Finding the Fourth Proportional to 20,865.13, 31,311.27 and 9,030.44

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Solution

The fourth proportional to 20,865.13, 31,311.27 and 9,030.44 is: 13,551.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,865.13 : 31,311.27 = 9,030.44 : x
  2. Step 2: Convert to fraction form
    20,865.13/31,311.27 = 9,030.44/x
  3. Step 3: Cross multiply
    20,865.13x = 31,311.27 × 9,030.44
  4. Step 4: Simplify right side
    20,865.13x = 282,754,623.34
  5. Step 5: Solve for x
    x = 282,754,623.34/20,865.13
  6. Step 6: Final answer
    x = 13,551.54

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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.