Home / 19,667.20-29,468.40-9,785.20

Finding the Fourth Proportional to 19,667.20, 29,468.40 and 9,785.20

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Solution

The fourth proportional to 19,667.20, 29,468.40 and 9,785.20 is: 14,661.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,667.20 : 29,468.40 = 9,785.20 : x
  2. Step 2: Convert to fraction form
    19,667.20/29,468.40 = 9,785.20/x
  3. Step 3: Cross multiply
    19,667.20x = 29,468.40 × 9,785.20
  4. Step 4: Simplify right side
    19,667.20x = 288,354,187.68
  5. Step 5: Solve for x
    x = 288,354,187.68/19,667.20
  6. Step 6: Final answer
    x = 14,661.68

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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.