Home / 12,748.40-19,122.60-4,437.80

Finding the Fourth Proportional to 12,748.40, 19,122.60 and 4,437.80

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Solution

The fourth proportional to 12,748.40, 19,122.60 and 4,437.80 is: 6,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,748.40 : 19,122.60 = 4,437.80 : x
  2. Step 2: Convert to fraction form
    12,748.40/19,122.60 = 4,437.80/x
  3. Step 3: Cross multiply
    12,748.40x = 19,122.60 × 4,437.80
  4. Step 4: Simplify right side
    12,748.40x = 84,862,274.28
  5. Step 5: Solve for x
    x = 84,862,274.28/12,748.40
  6. Step 6: Final answer
    x = 6,656.70

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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.