Home / 20,529.47-28,330.71-11,098.03

Finding the Fourth Proportional to 20,529.47, 28,330.71 and 11,098.03

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Solution

The fourth proportional to 20,529.47, 28,330.71 and 11,098.03 is: 15,315.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.47 : 28,330.71 = 11,098.03 : x
  2. Step 2: Convert to fraction form
    20,529.47/28,330.71 = 11,098.03/x
  3. Step 3: Cross multiply
    20,529.47x = 28,330.71 × 11,098.03
  4. Step 4: Simplify right side
    20,529.47x = 314,415,014.01
  5. Step 5: Solve for x
    x = 314,415,014.01/20,529.47
  6. Step 6: Final answer
    x = 15,315.30

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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.