Home / 28,988.16-40,000.38-16,239.60

Finding the Fourth Proportional to 28,988.16, 40,000.38 and 16,239.60

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Solution

The fourth proportional to 28,988.16, 40,000.38 and 16,239.60 is: 22,408.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,988.16 : 40,000.38 = 16,239.60 : x
  2. Step 2: Convert to fraction form
    28,988.16/40,000.38 = 16,239.60/x
  3. Step 3: Cross multiply
    28,988.16x = 40,000.38 × 16,239.60
  4. Step 4: Simplify right side
    28,988.16x = 649,590,171.05
  5. Step 5: Solve for x
    x = 649,590,171.05/28,988.16
  6. Step 6: Final answer
    x = 22,408.81

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1.5x scale

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.