Home / 13,285,420.40-19,965,455.40-11,643,129.20

Finding the Fourth Proportional to 13,285,420.40, 19,965,455.40 and 11,643,129.20

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Solution

The fourth proportional to 13,285,420.40, 19,965,455.40 and 11,643,129.20 is: 17,497,404.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,285,420.40 : 19,965,455.40 = 11,643,129.20 : x
  2. Step 2: Convert to fraction form
    13,285,420.40/19,965,455.40 = 11,643,129.20/x
  3. Step 3: Cross multiply
    13,285,420.40x = 19,965,455.40 × 11,643,129.20
  4. Step 4: Simplify right side
    13,285,420.40x = 232,460,376,759,037.66
  5. Step 5: Solve for x
    x = 232,460,376,759,037.66/13,285,420.40
  6. Step 6: Final answer
    x = 17,497,404.66

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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.