Home / 19,247.40-28,899.90-13,429.80

Finding the Fourth Proportional to 19,247.40, 28,899.90 and 13,429.80

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Solution

The fourth proportional to 19,247.40, 28,899.90 and 13,429.80 is: 20,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,247.40 : 28,899.90 = 13,429.80 : x
  2. Step 2: Convert to fraction form
    19,247.40/28,899.90 = 13,429.80/x
  3. Step 3: Cross multiply
    19,247.40x = 28,899.90 × 13,429.80
  4. Step 4: Simplify right side
    19,247.40x = 388,119,877.02
  5. Step 5: Solve for x
    x = 388,119,877.02/19,247.40
  6. Step 6: Final answer
    x = 20,164.80

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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.