Home / 13,319,405.64-18,380,779.20-7,207,834.32

Finding the Fourth Proportional to 13,319,405.64, 18,380,779.20 and 7,207,834.32

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Solution

The fourth proportional to 13,319,405.64, 18,380,779.20 and 7,207,834.32 is: 9,946,811.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319,405.64 : 18,380,779.20 = 7,207,834.32 : x
  2. Step 2: Convert to fraction form
    13,319,405.64/18,380,779.20 = 7,207,834.32/x
  3. Step 3: Cross multiply
    13,319,405.64x = 18,380,779.20 × 7,207,834.32
  4. Step 4: Simplify right side
    13,319,405.64x = 132,485,611,146,102.14
  5. Step 5: Solve for x
    x = 132,485,611,146,102.14/13,319,405.64
  6. Step 6: Final answer
    x = 9,946,811.05

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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.