Home / 20,938.16-28,892.98-11,983.61

Finding the Fourth Proportional to 20,938.16, 28,892.98 and 11,983.61

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Solution

The fourth proportional to 20,938.16, 28,892.98 and 11,983.61 is: 16,536.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,938.16 : 28,892.98 = 11,983.61 : x
  2. Step 2: Convert to fraction form
    20,938.16/28,892.98 = 11,983.61/x
  3. Step 3: Cross multiply
    20,938.16x = 28,892.98 × 11,983.61
  4. Step 4: Simplify right side
    20,938.16x = 346,242,204.06
  5. Step 5: Solve for x
    x = 346,242,204.06/20,938.16
  6. Step 6: Final answer
    x = 16,536.42

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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.