Home / 20,973.50-31,460.26-5,391.12

Finding the Fourth Proportional to 20,973.50, 31,460.26 and 5,391.12

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Solution

The fourth proportional to 20,973.50, 31,460.26 and 5,391.12 is: 8,086.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.50 : 31,460.26 = 5,391.12 : x
  2. Step 2: Convert to fraction form
    20,973.50/31,460.26 = 5,391.12/x
  3. Step 3: Cross multiply
    20,973.50x = 31,460.26 × 5,391.12
  4. Step 4: Simplify right side
    20,973.50x = 169,606,036.89
  5. Step 5: Solve for x
    x = 169,606,036.89/20,973.50
  6. Step 6: Final answer
    x = 8,086.68

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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.