Home / 20,580.84-28,391.12-13,014.42

Finding the Fourth Proportional to 20,580.84, 28,391.12 and 13,014.42

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Solution

The fourth proportional to 20,580.84, 28,391.12 and 13,014.42 is: 17,953.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.84 : 28,391.12 = 13,014.42 : x
  2. Step 2: Convert to fraction form
    20,580.84/28,391.12 = 13,014.42/x
  3. Step 3: Cross multiply
    20,580.84x = 28,391.12 × 13,014.42
  4. Step 4: Simplify right side
    20,580.84x = 369,493,959.95
  5. Step 5: Solve for x
    x = 369,493,959.95/20,580.84
  6. Step 6: Final answer
    x = 17,953.30

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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.