Home / 12,748.70-19,115.63-4,948.40

Finding the Fourth Proportional to 12,748.70, 19,115.63 and 4,948.40

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Solution

The fourth proportional to 12,748.70, 19,115.63 and 4,948.40 is: 7,419.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.70 : 19,115.63 = 4,948.40 : x
  2. Step 2: Convert to fraction form
    12,748.70/19,115.63 = 4,948.40/x
  3. Step 3: Cross multiply
    12,748.70x = 19,115.63 × 4,948.40
  4. Step 4: Simplify right side
    12,748.70x = 94,591,758.75
  5. Step 5: Solve for x
    x = 94,591,758.75/12,748.70
  6. Step 6: Final answer
    x = 7,419.72

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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.