Home / 20,533.79-28,336.64-11,102.34

Finding the Fourth Proportional to 20,533.79, 28,336.64 and 11,102.34

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Solution

The fourth proportional to 20,533.79, 28,336.64 and 11,102.34 is: 15,321.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.79 : 28,336.64 = 11,102.34 : x
  2. Step 2: Convert to fraction form
    20,533.79/28,336.64 = 11,102.34/x
  3. Step 3: Cross multiply
    20,533.79x = 28,336.64 × 11,102.34
  4. Step 4: Simplify right side
    20,533.79x = 314,602,956.23
  5. Step 5: Solve for x
    x = 314,602,956.23/20,533.79
  6. Step 6: Final answer
    x = 15,321.24

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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.