Home / 13,990.53-19,281.21-13,102.77

Finding the Fourth Proportional to 13,990.53, 19,281.21 and 13,102.77

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Solution

The fourth proportional to 13,990.53, 19,281.21 and 13,102.77 is: 18,057.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.53 : 19,281.21 = 13,102.77 : x
  2. Step 2: Convert to fraction form
    13,990.53/19,281.21 = 13,102.77/x
  3. Step 3: Cross multiply
    13,990.53x = 19,281.21 × 13,102.77
  4. Step 4: Simplify right side
    13,990.53x = 252,637,259.95
  5. Step 5: Solve for x
    x = 252,637,259.95/13,990.53
  6. Step 6: Final answer
    x = 18,057.73

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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.