Home / 13,383.42-18,477.78-8,605.50

Finding the Fourth Proportional to 13,383.42, 18,477.78 and 8,605.50

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Solution

The fourth proportional to 13,383.42, 18,477.78 and 8,605.50 is: 11,881.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.42 : 18,477.78 = 8,605.50 : x
  2. Step 2: Convert to fraction form
    13,383.42/18,477.78 = 8,605.50/x
  3. Step 3: Cross multiply
    13,383.42x = 18,477.78 × 8,605.50
  4. Step 4: Simplify right side
    13,383.42x = 159,010,492.76
  5. Step 5: Solve for x
    x = 159,010,492.76/13,383.42
  6. Step 6: Final answer
    x = 11,881.16

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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.