Home / 12,789,030.80-19,167,216.60-5,207,430.80

Finding the Fourth Proportional to 12,789,030.80, 19,167,216.60 and 5,207,430.80

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Solution

The fourth proportional to 12,789,030.80, 19,167,216.60 and 5,207,430.80 is: 7,804,497.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789,030.80 : 19,167,216.60 = 5,207,430.80 : x
  2. Step 2: Convert to fraction form
    12,789,030.80/19,167,216.60 = 5,207,430.80/x
  3. Step 3: Cross multiply
    12,789,030.80x = 19,167,216.60 × 5,207,430.80
  4. Step 4: Simplify right side
    12,789,030.80x = 99,811,954,073,111.28
  5. Step 5: Solve for x
    x = 99,811,954,073,111.28/12,789,030.80
  6. Step 6: Final answer
    x = 7,804,497.12

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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.