Home / 14,289.44-19,729.04-8,920.05

Finding the Fourth Proportional to 14,289.44, 19,729.04 and 8,920.05

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Solution

The fourth proportional to 14,289.44, 19,729.04 and 8,920.05 is: 12,315.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.44 : 19,729.04 = 8,920.05 : x
  2. Step 2: Convert to fraction form
    14,289.44/19,729.04 = 8,920.05/x
  3. Step 3: Cross multiply
    14,289.44x = 19,729.04 × 8,920.05
  4. Step 4: Simplify right side
    14,289.44x = 175,983,994.46
  5. Step 5: Solve for x
    x = 175,983,994.46/14,289.44
  6. Step 6: Final answer
    x = 12,315.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.