Home / 13,515,618.80-18,651,765-7,403,643.92

Finding the Fourth Proportional to 13,515,618.80, 18,651,765 and 7,403,643.92

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Solution

The fourth proportional to 13,515,618.80, 18,651,765 and 7,403,643.92 is: 10,217,144.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515,618.80 : 18,651,765 = 7,403,643.92 : x
  2. Step 2: Convert to fraction form
    13,515,618.80/18,651,765 = 7,403,643.92/x
  3. Step 3: Cross multiply
    13,515,618.80x = 18,651,765 × 7,403,643.92
  4. Step 4: Simplify right side
    13,515,618.80x = 138,091,026,539,518.80
  5. Step 5: Solve for x
    x = 138,091,026,539,518.80/13,515,618.80
  6. Step 6: Final answer
    x = 10,217,144.22

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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.