Home / 12,455,931.80-18,682,148.10-3,937,129.40

Finding the Fourth Proportional to 12,455,931.80, 18,682,148.10 and 3,937,129.40

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Solution

The fourth proportional to 12,455,931.80, 18,682,148.10 and 3,937,129.40 is: 5,905,141.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,931.80 : 18,682,148.10 = 3,937,129.40 : x
  2. Step 2: Convert to fraction form
    12,455,931.80/18,682,148.10 = 3,937,129.40/x
  3. Step 3: Cross multiply
    12,455,931.80x = 18,682,148.10 × 3,937,129.40
  4. Step 4: Simplify right side
    12,455,931.80x = 73,554,034,539,664.14
  5. Step 5: Solve for x
    x = 73,554,034,539,664.14/12,455,931.80
  6. Step 6: Final answer
    x = 5,905,141.08

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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.