Home / 12,480,030.80-18,682,721.40-7,428,741.20

Finding the Fourth Proportional to 12,480,030.80, 18,682,721.40 and 7,428,741.20

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Solution

The fourth proportional to 12,480,030.80, 18,682,721.40 and 7,428,741.20 is: 11,120,894.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480,030.80 : 18,682,721.40 = 7,428,741.20 : x
  2. Step 2: Convert to fraction form
    12,480,030.80/18,682,721.40 = 7,428,741.20/x
  3. Step 3: Cross multiply
    12,480,030.80x = 18,682,721.40 × 7,428,741.20
  4. Step 4: Simplify right side
    12,480,030.80x = 138,789,102,192,301.67
  5. Step 5: Solve for x
    x = 138,789,102,192,301.67/12,480,030.80
  6. Step 6: Final answer
    x = 11,120,894.20

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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.