Home / 13,138,729.60-19,694,680.80-8,879,328.40

Finding the Fourth Proportional to 13,138,729.60, 19,694,680.80 and 8,879,328.40

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Solution

The fourth proportional to 13,138,729.60, 19,694,680.80 and 8,879,328.40 is: 13,309,927.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138,729.60 : 19,694,680.80 = 8,879,328.40 : x
  2. Step 2: Convert to fraction form
    13,138,729.60/19,694,680.80 = 8,879,328.40/x
  3. Step 3: Cross multiply
    13,138,729.60x = 19,694,680.80 × 8,879,328.40
  4. Step 4: Simplify right side
    13,138,729.60x = 174,875,538,556,374.72
  5. Step 5: Solve for x
    x = 174,875,538,556,374.72/13,138,729.60
  6. Step 6: Final answer
    x = 13,309,927.51

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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.