Home / 12,128,429.10-18,192,643.65-3,607,658.40

Finding the Fourth Proportional to 12,128,429.10, 18,192,643.65 and 3,607,658.40

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Solution

The fourth proportional to 12,128,429.10, 18,192,643.65 and 3,607,658.40 is: 5,411,487.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,429.10 : 18,192,643.65 = 3,607,658.40 : x
  2. Step 2: Convert to fraction form
    12,128,429.10/18,192,643.65 = 3,607,658.40/x
  3. Step 3: Cross multiply
    12,128,429.10x = 18,192,643.65 × 3,607,658.40
  4. Step 4: Simplify right side
    12,128,429.10x = 65,632,843,682,129.16
  5. Step 5: Solve for x
    x = 65,632,843,682,129.16/12,128,429.10
  6. Step 6: Final answer
    x = 5,411,487.60

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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.