Home / 12,618.45-18,890.28-9,346.19

Finding the Fourth Proportional to 12,618.45, 18,890.28 and 9,346.19

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Solution

The fourth proportional to 12,618.45, 18,890.28 and 9,346.19 is: 13,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.45 : 18,890.28 = 9,346.19 : x
  2. Step 2: Convert to fraction form
    12,618.45/18,890.28 = 9,346.19/x
  3. Step 3: Cross multiply
    12,618.45x = 18,890.28 × 9,346.19
  4. Step 4: Simplify right side
    12,618.45x = 176,552,051.58
  5. Step 5: Solve for x
    x = 176,552,051.58/12,618.45
  6. Step 6: Final answer
    x = 13,991.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.