Home / 13,494.60-20,217.60-12,681.36

Finding the Fourth Proportional to 13,494.60, 20,217.60 and 12,681.36

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Solution

The fourth proportional to 13,494.60, 20,217.60 and 12,681.36 is: 18,999.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,494.60 : 20,217.60 = 12,681.36 : x
  2. Step 2: Convert to fraction form
    13,494.60/20,217.60 = 12,681.36/x
  3. Step 3: Cross multiply
    13,494.60x = 20,217.60 × 12,681.36
  4. Step 4: Simplify right side
    13,494.60x = 256,386,663.94
  5. Step 5: Solve for x
    x = 256,386,663.94/13,494.60
  6. Step 6: Final answer
    x = 18,999.20

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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.