Home / 20,317.32-30,428.59-19,756.67

Finding the Fourth Proportional to 20,317.32, 30,428.59 and 19,756.67

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Solution

The fourth proportional to 20,317.32, 30,428.59 and 19,756.67 is: 29,588.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,317.32 : 30,428.59 = 19,756.67 : x
  2. Step 2: Convert to fraction form
    20,317.32/30,428.59 = 19,756.67/x
  3. Step 3: Cross multiply
    20,317.32x = 30,428.59 × 19,756.67
  4. Step 4: Simplify right side
    20,317.32x = 601,167,611.20
  5. Step 5: Solve for x
    x = 601,167,611.20/20,317.32
  6. Step 6: Final answer
    x = 29,588.92

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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.