Home / 13,518.92-18,668.93-12,782.63

Finding the Fourth Proportional to 13,518.92, 18,668.93 and 12,782.63

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Solution

The fourth proportional to 13,518.92, 18,668.93 and 12,782.63 is: 17,652.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.92 : 18,668.93 = 12,782.63 : x
  2. Step 2: Convert to fraction form
    13,518.92/18,668.93 = 12,782.63/x
  3. Step 3: Cross multiply
    13,518.92x = 18,668.93 × 12,782.63
  4. Step 4: Simplify right side
    13,518.92x = 238,638,007.45
  5. Step 5: Solve for x
    x = 238,638,007.45/13,518.92
  6. Step 6: Final answer
    x = 17,652.15

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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.