Home / 13,490,145-18,616,400.10-7,378,573.50

Finding the Fourth Proportional to 13,490,145, 18,616,400.10 and 7,378,573.50

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Solution

The fourth proportional to 13,490,145, 18,616,400.10 and 7,378,573.50 is: 10,182,431.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490,145 : 18,616,400.10 = 7,378,573.50 : x
  2. Step 2: Convert to fraction form
    13,490,145/18,616,400.10 = 7,378,573.50/x
  3. Step 3: Cross multiply
    13,490,145x = 18,616,400.10 × 7,378,573.50
  4. Step 4: Simplify right side
    13,490,145x = 137,362,476,443,257.36
  5. Step 5: Solve for x
    x = 137,362,476,443,257.36/13,490,145
  6. Step 6: Final answer
    x = 10,182,431.43

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1.5x scale

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.