Home / 14,279.60-21,419.40-12,748.70

Finding the Fourth Proportional to 14,279.60, 21,419.40 and 12,748.70

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Solution

The fourth proportional to 14,279.60, 21,419.40 and 12,748.70 is: 19,123.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.60 : 21,419.40 = 12,748.70 : x
  2. Step 2: Convert to fraction form
    14,279.60/21,419.40 = 12,748.70/x
  3. Step 3: Cross multiply
    14,279.60x = 21,419.40 × 12,748.70
  4. Step 4: Simplify right side
    14,279.60x = 273,069,504.78
  5. Step 5: Solve for x
    x = 273,069,504.78/14,279.60
  6. Step 6: Final answer
    x = 19,123.05

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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.