Home / 13,519.72-18,657.29-7,551.64

Finding the Fourth Proportional to 13,519.72, 18,657.29 and 7,551.64

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Solution

The fourth proportional to 13,519.72, 18,657.29 and 7,551.64 is: 10,421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.72 : 18,657.29 = 7,551.64 : x
  2. Step 2: Convert to fraction form
    13,519.72/18,657.29 = 7,551.64/x
  3. Step 3: Cross multiply
    13,519.72x = 18,657.29 × 7,551.64
  4. Step 4: Simplify right side
    13,519.72x = 140,893,006.41
  5. Step 5: Solve for x
    x = 140,893,006.41/13,519.72
  6. Step 6: Final answer
    x = 10,421.30

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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.