Home / 13,513.64-20,256.69-7,657.88

Finding the Fourth Proportional to 13,513.64, 20,256.69 and 7,657.88

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Solution

The fourth proportional to 13,513.64, 20,256.69 and 7,657.88 is: 11,479.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.64 : 20,256.69 = 7,657.88 : x
  2. Step 2: Convert to fraction form
    13,513.64/20,256.69 = 7,657.88/x
  3. Step 3: Cross multiply
    13,513.64x = 20,256.69 × 7,657.88
  4. Step 4: Simplify right side
    13,513.64x = 155,123,301.22
  5. Step 5: Solve for x
    x = 155,123,301.22/13,513.64
  6. Step 6: Final answer
    x = 11,479.02

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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.