Home / 11,931.60-17,899.89-3,612.40

Finding the Fourth Proportional to 11,931.60, 17,899.89 and 3,612.40

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Solution

The fourth proportional to 11,931.60, 17,899.89 and 3,612.40 is: 5,419.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.60 : 17,899.89 = 3,612.40 : x
  2. Step 2: Convert to fraction form
    11,931.60/17,899.89 = 3,612.40/x
  3. Step 3: Cross multiply
    11,931.60x = 17,899.89 × 3,612.40
  4. Step 4: Simplify right side
    11,931.60x = 64,661,504.34
  5. Step 5: Solve for x
    x = 64,661,504.34/11,931.60
  6. Step 6: Final answer
    x = 5,419.35

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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.