Home / 20,932.84-28,880.17-12,972.16

Finding the Fourth Proportional to 20,932.84, 28,880.17 and 12,972.16

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Solution

The fourth proportional to 20,932.84, 28,880.17 and 12,972.16 is: 17,897.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.84 : 28,880.17 = 12,972.16 : x
  2. Step 2: Convert to fraction form
    20,932.84/28,880.17 = 12,972.16/x
  3. Step 3: Cross multiply
    20,932.84x = 28,880.17 × 12,972.16
  4. Step 4: Simplify right side
    20,932.84x = 374,638,186.07
  5. Step 5: Solve for x
    x = 374,638,186.07/20,932.84
  6. Step 6: Final answer
    x = 17,897.15

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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.