Home / 20,635.84-28,477.47-11,204.56

Finding the Fourth Proportional to 20,635.84, 28,477.47 and 11,204.56

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Solution

The fourth proportional to 20,635.84, 28,477.47 and 11,204.56 is: 15,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.84 : 28,477.47 = 11,204.56 : x
  2. Step 2: Convert to fraction form
    20,635.84/28,477.47 = 11,204.56/x
  3. Step 3: Cross multiply
    20,635.84x = 28,477.47 × 11,204.56
  4. Step 4: Simplify right side
    20,635.84x = 319,077,521.26
  5. Step 5: Solve for x
    x = 319,077,521.26/20,635.84
  6. Step 6: Final answer
    x = 15,462.30

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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.