Home / 12,788,477.36-17,647,890-6,987,134.24

Finding the Fourth Proportional to 12,788,477.36, 17,647,890 and 6,987,134.24

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Solution

The fourth proportional to 12,788,477.36, 17,647,890 and 6,987,134.24 is: 9,642,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788,477.36 : 17,647,890 = 6,987,134.24 : x
  2. Step 2: Convert to fraction form
    12,788,477.36/17,647,890 = 6,987,134.24/x
  3. Step 3: Cross multiply
    12,788,477.36x = 17,647,890 × 6,987,134.24
  4. Step 4: Simplify right side
    12,788,477.36x = 123,308,176,482,753.61
  5. Step 5: Solve for x
    x = 123,308,176,482,753.61/12,788,477.36
  6. Step 6: Final answer
    x = 9,642,131.19

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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.