Home / 13,111.60-19,667.40-9,785.20

Finding the Fourth Proportional to 13,111.60, 19,667.40 and 9,785.20

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Solution

The fourth proportional to 13,111.60, 19,667.40 and 9,785.20 is: 14,677.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.60 : 19,667.40 = 9,785.20 : x
  2. Step 2: Convert to fraction form
    13,111.60/19,667.40 = 9,785.20/x
  3. Step 3: Cross multiply
    13,111.60x = 19,667.40 × 9,785.20
  4. Step 4: Simplify right side
    13,111.60x = 192,449,442.48
  5. Step 5: Solve for x
    x = 192,449,442.48/13,111.60
  6. Step 6: Final answer
    x = 14,677.80

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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.