Home / 20,346.34-28,076.70-11,392.33

Finding the Fourth Proportional to 20,346.34, 28,076.70 and 11,392.33

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Solution

The fourth proportional to 20,346.34, 28,076.70 and 11,392.33 is: 15,720.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.34 : 28,076.70 = 11,392.33 : x
  2. Step 2: Convert to fraction form
    20,346.34/28,076.70 = 11,392.33/x
  3. Step 3: Cross multiply
    20,346.34x = 28,076.70 × 11,392.33
  4. Step 4: Simplify right side
    20,346.34x = 319,859,031.71
  5. Step 5: Solve for x
    x = 319,859,031.71/20,346.34
  6. Step 6: Final answer
    x = 15,720.72

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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.