Home / 13,178,142.45-18,188,013.15-9,044,778.06

Finding the Fourth Proportional to 13,178,142.45, 18,188,013.15 and 9,044,778.06

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Solution

The fourth proportional to 13,178,142.45, 18,188,013.15 and 9,044,778.06 is: 12,483,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178,142.45 : 18,188,013.15 = 9,044,778.06 : x
  2. Step 2: Convert to fraction form
    13,178,142.45/18,188,013.15 = 9,044,778.06/x
  3. Step 3: Cross multiply
    13,178,142.45x = 18,188,013.15 × 9,044,778.06
  4. Step 4: Simplify right side
    13,178,142.45x = 164,506,542,294,111.50
  5. Step 5: Solve for x
    x = 164,506,542,294,111.50/13,178,142.45
  6. Step 6: Final answer
    x = 12,483,287.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.