Home / 20,677.19-31,015.80-7,529.67

Finding the Fourth Proportional to 20,677.19, 31,015.80 and 7,529.67

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Solution

The fourth proportional to 20,677.19, 31,015.80 and 7,529.67 is: 11,294.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.19 : 31,015.80 = 7,529.67 : x
  2. Step 2: Convert to fraction form
    20,677.19/31,015.80 = 7,529.67/x
  3. Step 3: Cross multiply
    20,677.19x = 31,015.80 × 7,529.67
  4. Step 4: Simplify right side
    20,677.19x = 233,538,738.79
  5. Step 5: Solve for x
    x = 233,538,738.79/20,677.19
  6. Step 6: Final answer
    x = 11,294.51

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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.