Home / 18,883.36-28,332.72-12,136.50

Finding the Fourth Proportional to 18,883.36, 28,332.72 and 12,136.50

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Solution

The fourth proportional to 18,883.36, 28,332.72 and 12,136.50 is: 18,209.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.36 : 28,332.72 = 12,136.50 : x
  2. Step 2: Convert to fraction form
    18,883.36/28,332.72 = 12,136.50/x
  3. Step 3: Cross multiply
    18,883.36x = 28,332.72 × 12,136.50
  4. Step 4: Simplify right side
    18,883.36x = 343,860,056.28
  5. Step 5: Solve for x
    x = 343,860,056.28/18,883.36
  6. Step 6: Final answer
    x = 18,209.69

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1.5x scale

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.