Home / 20,734.79-28,613.86-11,303.42

Finding the Fourth Proportional to 20,734.79, 28,613.86 and 11,303.42

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Solution

The fourth proportional to 20,734.79, 28,613.86 and 11,303.42 is: 15,598.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,734.79 : 28,613.86 = 11,303.42 : x
  2. Step 2: Convert to fraction form
    20,734.79/28,613.86 = 11,303.42/x
  3. Step 3: Cross multiply
    20,734.79x = 28,613.86 × 11,303.42
  4. Step 4: Simplify right side
    20,734.79x = 323,434,306.07
  5. Step 5: Solve for x
    x = 323,434,306.07/20,734.79
  6. Step 6: Final answer
    x = 15,598.63

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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.