Home / 15,347.75-21,178.41-9,385.44

Finding the Fourth Proportional to 15,347.75, 21,178.41 and 9,385.44

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Solution

The fourth proportional to 15,347.75, 21,178.41 and 9,385.44 is: 12,951.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.75 : 21,178.41 = 9,385.44 : x
  2. Step 2: Convert to fraction form
    15,347.75/21,178.41 = 9,385.44/x
  3. Step 3: Cross multiply
    15,347.75x = 21,178.41 × 9,385.44
  4. Step 4: Simplify right side
    15,347.75x = 198,768,634.53
  5. Step 5: Solve for x
    x = 198,768,634.53/15,347.75
  6. Step 6: Final answer
    x = 12,951.00

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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.