Home / 20,904.78-28,848.57-11,473.56

Finding the Fourth Proportional to 20,904.78, 28,848.57 and 11,473.56

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Solution

The fourth proportional to 20,904.78, 28,848.57 and 11,473.56 is: 15,833.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.78 : 28,848.57 = 11,473.56 : x
  2. Step 2: Convert to fraction form
    20,904.78/28,848.57 = 11,473.56/x
  3. Step 3: Cross multiply
    20,904.78x = 28,848.57 × 11,473.56
  4. Step 4: Simplify right side
    20,904.78x = 330,995,798.81
  5. Step 5: Solve for x
    x = 330,995,798.81/20,904.78
  6. Step 6: Final answer
    x = 15,833.50

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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.