Home / 12,256.84-18,378.52-5,679.40

Finding the Fourth Proportional to 12,256.84, 18,378.52 and 5,679.40

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Solution

The fourth proportional to 12,256.84, 18,378.52 and 5,679.40 is: 8,515.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.84 : 18,378.52 = 5,679.40 : x
  2. Step 2: Convert to fraction form
    12,256.84/18,378.52 = 5,679.40/x
  3. Step 3: Cross multiply
    12,256.84x = 18,378.52 × 5,679.40
  4. Step 4: Simplify right side
    12,256.84x = 104,378,966.49
  5. Step 5: Solve for x
    x = 104,378,966.49/12,256.84
  6. Step 6: Final answer
    x = 8,515.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.