Home / 20,762.79-28,653.59-11,691.27

Finding the Fourth Proportional to 20,762.79, 28,653.59 and 11,691.27

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Solution

The fourth proportional to 20,762.79, 28,653.59 and 11,691.27 is: 16,134.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.79 : 28,653.59 = 11,691.27 : x
  2. Step 2: Convert to fraction form
    20,762.79/28,653.59 = 11,691.27/x
  3. Step 3: Cross multiply
    20,762.79x = 28,653.59 × 11,691.27
  4. Step 4: Simplify right side
    20,762.79x = 334,996,857.16
  5. Step 5: Solve for x
    x = 334,996,857.16/20,762.79
  6. Step 6: Final answer
    x = 16,134.48

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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.