Home / 13,009.20-17,937.48-12,308.55

Finding the Fourth Proportional to 13,009.20, 17,937.48 and 12,308.55

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Solution

The fourth proportional to 13,009.20, 17,937.48 and 12,308.55 is: 16,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,009.20 : 17,937.48 = 12,308.55 : x
  2. Step 2: Convert to fraction form
    13,009.20/17,937.48 = 12,308.55/x
  3. Step 3: Cross multiply
    13,009.20x = 17,937.48 × 12,308.55
  4. Step 4: Simplify right side
    13,009.20x = 220,784,369.45
  5. Step 5: Solve for x
    x = 220,784,369.45/13,009.20
  6. Step 6: Final answer
    x = 16,971.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.