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Finding the Fourth Proportional to 15,059.32, 20,783.79 and 10,749.11

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Solution

The fourth proportional to 15,059.32, 20,783.79 and 10,749.11 is: 14,835.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.32 : 20,783.79 = 10,749.11 : x
  2. Step 2: Convert to fraction form
    15,059.32/20,783.79 = 10,749.11/x
  3. Step 3: Cross multiply
    15,059.32x = 20,783.79 × 10,749.11
  4. Step 4: Simplify right side
    15,059.32x = 223,407,141.01
  5. Step 5: Solve for x
    x = 223,407,141.01/15,059.32
  6. Step 6: Final answer
    x = 14,835.14

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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.