Home / 11,325.60-16,988.40-3,117.60

Finding the Fourth Proportional to 11,325.60, 16,988.40 and 3,117.60

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Solution

The fourth proportional to 11,325.60, 16,988.40 and 3,117.60 is: 4,676.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.60 : 16,988.40 = 3,117.60 : x
  2. Step 2: Convert to fraction form
    11,325.60/16,988.40 = 3,117.60/x
  3. Step 3: Cross multiply
    11,325.60x = 16,988.40 × 3,117.60
  4. Step 4: Simplify right side
    11,325.60x = 52,963,035.84
  5. Step 5: Solve for x
    x = 52,963,035.84/11,325.60
  6. Step 6: Final answer
    x = 4,676.40

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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.