Home / 13,209,619.80-19,814,429.70-11,886,922.20

Finding the Fourth Proportional to 13,209,619.80, 19,814,429.70 and 11,886,922.20

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Solution

The fourth proportional to 13,209,619.80, 19,814,429.70 and 11,886,922.20 is: 17,830,383.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209,619.80 : 19,814,429.70 = 11,886,922.20 : x
  2. Step 2: Convert to fraction form
    13,209,619.80/19,814,429.70 = 11,886,922.20/x
  3. Step 3: Cross multiply
    13,209,619.80x = 19,814,429.70 × 11,886,922.20
  4. Step 4: Simplify right side
    13,209,619.80x = 235,532,584,281,269.31
  5. Step 5: Solve for x
    x = 235,532,584,281,269.31/13,209,619.80
  6. Step 6: Final answer
    x = 17,830,383.30

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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.