Home / 20,972.84-28,941.42-11,539.58

Finding the Fourth Proportional to 20,972.84, 28,941.42 and 11,539.58

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Solution

The fourth proportional to 20,972.84, 28,941.42 and 11,539.58 is: 15,924.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.84 : 28,941.42 = 11,539.58 : x
  2. Step 2: Convert to fraction form
    20,972.84/28,941.42 = 11,539.58/x
  3. Step 3: Cross multiply
    20,972.84x = 28,941.42 × 11,539.58
  4. Step 4: Simplify right side
    20,972.84x = 333,971,831.40
  5. Step 5: Solve for x
    x = 333,971,831.40/20,972.84
  6. Step 6: Final answer
    x = 15,924.02

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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.