Home / 14,259.60-21,389.40-12,728.70

Finding the Fourth Proportional to 14,259.60, 21,389.40 and 12,728.70

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Solution

The fourth proportional to 14,259.60, 21,389.40 and 12,728.70 is: 19,093.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,259.60 : 21,389.40 = 12,728.70 : x
  2. Step 2: Convert to fraction form
    14,259.60/21,389.40 = 12,728.70/x
  3. Step 3: Cross multiply
    14,259.60x = 21,389.40 × 12,728.70
  4. Step 4: Simplify right side
    14,259.60x = 272,259,255.78
  5. Step 5: Solve for x
    x = 272,259,255.78/14,259.60
  6. Step 6: Final answer
    x = 19,093.05

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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.