Home / 20,529.36-28,330.56-11,097.96

Finding the Fourth Proportional to 20,529.36, 28,330.56 and 11,097.96

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Solution

The fourth proportional to 20,529.36, 28,330.56 and 11,097.96 is: 15,315.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.36 : 28,330.56 = 11,097.96 : x
  2. Step 2: Convert to fraction form
    20,529.36/28,330.56 = 11,097.96/x
  3. Step 3: Cross multiply
    20,529.36x = 28,330.56 × 11,097.96
  4. Step 4: Simplify right side
    20,529.36x = 314,411,421.66
  5. Step 5: Solve for x
    x = 314,411,421.66/20,529.36
  6. Step 6: Final answer
    x = 15,315.21

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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.