Home / 14,709.26-20,300.56-8,421.50

Finding the Fourth Proportional to 14,709.26, 20,300.56 and 8,421.50

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Solution

The fourth proportional to 14,709.26, 20,300.56 and 8,421.50 is: 11,622.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,709.26 : 20,300.56 = 8,421.50 : x
  2. Step 2: Convert to fraction form
    14,709.26/20,300.56 = 8,421.50/x
  3. Step 3: Cross multiply
    14,709.26x = 20,300.56 × 8,421.50
  4. Step 4: Simplify right side
    14,709.26x = 170,961,166.04
  5. Step 5: Solve for x
    x = 170,961,166.04/14,709.26
  6. Step 6: Final answer
    x = 11,622.69

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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.