Home / 13,421,219.36-18,520,622.54-7,619,239.58

Finding the Fourth Proportional to 13,421,219.36, 18,520,622.54 and 7,619,239.58

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Solution

The fourth proportional to 13,421,219.36, 18,520,622.54 and 7,619,239.58 is: 10,514,175.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421,219.36 : 18,520,622.54 = 7,619,239.58 : x
  2. Step 2: Convert to fraction form
    13,421,219.36/18,520,622.54 = 7,619,239.58/x
  3. Step 3: Cross multiply
    13,421,219.36x = 18,520,622.54 × 7,619,239.58
  4. Step 4: Simplify right side
    13,421,219.36x = 141,113,060,303,008.12
  5. Step 5: Solve for x
    x = 141,113,060,303,008.12/13,421,219.36
  6. Step 6: Final answer
    x = 10,514,175.84

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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.