Home / 12,438,045.30-18,657,067.95-11,430,275.70

Finding the Fourth Proportional to 12,438,045.30, 18,657,067.95 and 11,430,275.70

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Solution

The fourth proportional to 12,438,045.30, 18,657,067.95 and 11,430,275.70 is: 17,145,413.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438,045.30 : 18,657,067.95 = 11,430,275.70 : x
  2. Step 2: Convert to fraction form
    12,438,045.30/18,657,067.95 = 11,430,275.70/x
  3. Step 3: Cross multiply
    12,438,045.30x = 18,657,067.95 × 11,430,275.70
  4. Step 4: Simplify right side
    12,438,045.30x = 213,255,430,422,133.78
  5. Step 5: Solve for x
    x = 213,255,430,422,133.78/12,438,045.30
  6. Step 6: Final answer
    x = 17,145,413.55

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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.