Home / 12,151.19-18,209.45-5,388.50

Finding the Fourth Proportional to 12,151.19, 18,209.45 and 5,388.50

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Solution

The fourth proportional to 12,151.19, 18,209.45 and 5,388.50 is: 8,075.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,151.19 : 18,209.45 = 5,388.50 : x
  2. Step 2: Convert to fraction form
    12,151.19/18,209.45 = 5,388.50/x
  3. Step 3: Cross multiply
    12,151.19x = 18,209.45 × 5,388.50
  4. Step 4: Simplify right side
    12,151.19x = 98,121,503.34
  5. Step 5: Solve for x
    x = 98,121,503.34/12,151.19
  6. Step 6: Final answer
    x = 8,075.06

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Double scale
Find fourth proportional to 12,152.19, 18,210.94 and 5,389.50
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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.