Home / 20,300.39-28,012.25-11,347.59

Finding the Fourth Proportional to 20,300.39, 28,012.25 and 11,347.59

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Solution

The fourth proportional to 20,300.39, 28,012.25 and 11,347.59 is: 15,658.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.39 : 28,012.25 = 11,347.59 : x
  2. Step 2: Convert to fraction form
    20,300.39/28,012.25 = 11,347.59/x
  3. Step 3: Cross multiply
    20,300.39x = 28,012.25 × 11,347.59
  4. Step 4: Simplify right side
    20,300.39x = 317,871,597.56
  5. Step 5: Solve for x
    x = 317,871,597.56/20,300.39
  6. Step 6: Final answer
    x = 15,658.40

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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.