Home / 13,525.05-18,677.34-12,788.76

Finding the Fourth Proportional to 13,525.05, 18,677.34 and 12,788.76

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Solution

The fourth proportional to 13,525.05, 18,677.34 and 12,788.76 is: 17,660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,525.05 : 18,677.34 = 12,788.76 : x
  2. Step 2: Convert to fraction form
    13,525.05/18,677.34 = 12,788.76/x
  3. Step 3: Cross multiply
    13,525.05x = 18,677.34 × 12,788.76
  4. Step 4: Simplify right side
    13,525.05x = 238,860,018.70
  5. Step 5: Solve for x
    x = 238,860,018.70/13,525.05
  6. Step 6: Final answer
    x = 17,660.56

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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.