Home / 20,307.14-28,020.43-11,354.72

Finding the Fourth Proportional to 20,307.14, 28,020.43 and 11,354.72

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Solution

The fourth proportional to 20,307.14, 28,020.43 and 11,354.72 is: 15,667.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.14 : 28,020.43 = 11,354.72 : x
  2. Step 2: Convert to fraction form
    20,307.14/28,020.43 = 11,354.72/x
  3. Step 3: Cross multiply
    20,307.14x = 28,020.43 × 11,354.72
  4. Step 4: Simplify right side
    20,307.14x = 318,164,011.02
  5. Step 5: Solve for x
    x = 318,164,011.02/20,307.14
  6. Step 6: Final answer
    x = 15,667.59

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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.