Home / 20,407.23-28,164.81-11,334.63

Finding the Fourth Proportional to 20,407.23, 28,164.81 and 11,334.63

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Solution

The fourth proportional to 20,407.23, 28,164.81 and 11,334.63 is: 15,643.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.23 : 28,164.81 = 11,334.63 : x
  2. Step 2: Convert to fraction form
    20,407.23/28,164.81 = 11,334.63/x
  3. Step 3: Cross multiply
    20,407.23x = 28,164.81 × 11,334.63
  4. Step 4: Simplify right side
    20,407.23x = 319,237,587.88
  5. Step 5: Solve for x
    x = 319,237,587.88/20,407.23
  6. Step 6: Final answer
    x = 15,643.36

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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.