Home / 15,186.72-20,946.36-11,152.28

Finding the Fourth Proportional to 15,186.72, 20,946.36 and 11,152.28

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Solution

The fourth proportional to 15,186.72, 20,946.36 and 11,152.28 is: 15,381.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.72 : 20,946.36 = 11,152.28 : x
  2. Step 2: Convert to fraction form
    15,186.72/20,946.36 = 11,152.28/x
  3. Step 3: Cross multiply
    15,186.72x = 20,946.36 × 11,152.28
  4. Step 4: Simplify right side
    15,186.72x = 233,599,511.21
  5. Step 5: Solve for x
    x = 233,599,511.21/15,186.72
  6. Step 6: Final answer
    x = 15,381.83

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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.