Home / 20,711.37-31,071.63-7,563.72

Finding the Fourth Proportional to 20,711.37, 31,071.63 and 7,563.72

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Solution

The fourth proportional to 20,711.37, 31,071.63 and 7,563.72 is: 11,347.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.37 : 31,071.63 = 7,563.72 : x
  2. Step 2: Convert to fraction form
    20,711.37/31,071.63 = 7,563.72/x
  3. Step 3: Cross multiply
    20,711.37x = 31,071.63 × 7,563.72
  4. Step 4: Simplify right side
    20,711.37x = 235,017,109.26
  5. Step 5: Solve for x
    x = 235,017,109.26/20,711.37
  6. Step 6: Final answer
    x = 11,347.25

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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.