Home / 20,953.37-31,420.18-7,616.98

Finding the Fourth Proportional to 20,953.37, 31,420.18 and 7,616.98

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Solution

The fourth proportional to 20,953.37, 31,420.18 and 7,616.98 is: 11,421.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.37 : 31,420.18 = 7,616.98 : x
  2. Step 2: Convert to fraction form
    20,953.37/31,420.18 = 7,616.98/x
  3. Step 3: Cross multiply
    20,953.37x = 31,420.18 × 7,616.98
  4. Step 4: Simplify right side
    20,953.37x = 239,326,882.66
  5. Step 5: Solve for x
    x = 239,326,882.66/20,953.37
  6. Step 6: Final answer
    x = 11,421.88

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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.