Home / 19,933.20-29,899.80-13,712.40

Finding the Fourth Proportional to 19,933.20, 29,899.80 and 13,712.40

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Solution

The fourth proportional to 19,933.20, 29,899.80 and 13,712.40 is: 20,568.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,933.20 : 29,899.80 = 13,712.40 : x
  2. Step 2: Convert to fraction form
    19,933.20/29,899.80 = 13,712.40/x
  3. Step 3: Cross multiply
    19,933.20x = 29,899.80 × 13,712.40
  4. Step 4: Simplify right side
    19,933.20x = 409,998,017.52
  5. Step 5: Solve for x
    x = 409,998,017.52/19,933.20
  6. Step 6: Final answer
    x = 20,568.60

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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.