Home / 20,973.16-31,458.72-7,824.50

Finding the Fourth Proportional to 20,973.16, 31,458.72 and 7,824.50

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Solution

The fourth proportional to 20,973.16, 31,458.72 and 7,824.50 is: 11,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.16 : 31,458.72 = 7,824.50 : x
  2. Step 2: Convert to fraction form
    20,973.16/31,458.72 = 7,824.50/x
  3. Step 3: Cross multiply
    20,973.16x = 31,458.72 × 7,824.50
  4. Step 4: Simplify right side
    20,973.16x = 246,148,754.64
  5. Step 5: Solve for x
    x = 246,148,754.64/20,973.16
  6. Step 6: Final answer
    x = 11,736.37

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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.