Home / 15,148.45-20,899.45-8,771.56

Finding the Fourth Proportional to 15,148.45, 20,899.45 and 8,771.56

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Solution

The fourth proportional to 15,148.45, 20,899.45 and 8,771.56 is: 12,101.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148.45 : 20,899.45 = 8,771.56 : x
  2. Step 2: Convert to fraction form
    15,148.45/20,899.45 = 8,771.56/x
  3. Step 3: Cross multiply
    15,148.45x = 20,899.45 × 8,771.56
  4. Step 4: Simplify right side
    15,148.45x = 183,320,779.64
  5. Step 5: Solve for x
    x = 183,320,779.64/15,148.45
  6. Step 6: Final answer
    x = 12,101.62

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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.