Home / 20,300.83-28,011.72-11,348.40

Finding the Fourth Proportional to 20,300.83, 28,011.72 and 11,348.40

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Solution

The fourth proportional to 20,300.83, 28,011.72 and 11,348.40 is: 15,658.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.83 : 28,011.72 = 11,348.40 : x
  2. Step 2: Convert to fraction form
    20,300.83/28,011.72 = 11,348.40/x
  3. Step 3: Cross multiply
    20,300.83x = 28,011.72 × 11,348.40
  4. Step 4: Simplify right side
    20,300.83x = 317,888,203.25
  5. Step 5: Solve for x
    x = 317,888,203.25/20,300.83
  6. Step 6: Final answer
    x = 15,658.88

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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.