Home / 13,777.11-19,019.48-12,432.51

Finding the Fourth Proportional to 13,777.11, 19,019.48 and 12,432.51

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Solution

The fourth proportional to 13,777.11, 19,019.48 and 12,432.51 is: 17,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,777.11 : 19,019.48 = 12,432.51 : x
  2. Step 2: Convert to fraction form
    13,777.11/19,019.48 = 12,432.51/x
  3. Step 3: Cross multiply
    13,777.11x = 19,019.48 × 12,432.51
  4. Step 4: Simplify right side
    13,777.11x = 236,459,813.13
  5. Step 5: Solve for x
    x = 236,459,813.13/13,777.11
  6. Step 6: Final answer
    x = 17,163.24

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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.