Home / 15,059.90-20,782.83-8,345.63

Finding the Fourth Proportional to 15,059.90, 20,782.83 and 8,345.63

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Solution

The fourth proportional to 15,059.90, 20,782.83 and 8,345.63 is: 11,517.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.90 : 20,782.83 = 8,345.63 : x
  2. Step 2: Convert to fraction form
    15,059.90/20,782.83 = 8,345.63/x
  3. Step 3: Cross multiply
    15,059.90x = 20,782.83 × 8,345.63
  4. Step 4: Simplify right side
    15,059.90x = 173,445,861.49
  5. Step 5: Solve for x
    x = 173,445,861.49/15,059.90
  6. Step 6: Final answer
    x = 11,517.07

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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.