Home / 13,890.42-20,835.54-3,502.17

Finding the Fourth Proportional to 13,890.42, 20,835.54 and 3,502.17

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Solution

The fourth proportional to 13,890.42, 20,835.54 and 3,502.17 is: 5,253.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,890.42 : 20,835.54 = 3,502.17 : x
  2. Step 2: Convert to fraction form
    13,890.42/20,835.54 = 3,502.17/x
  3. Step 3: Cross multiply
    13,890.42x = 20,835.54 × 3,502.17
  4. Step 4: Simplify right side
    13,890.42x = 72,969,603.12
  5. Step 5: Solve for x
    x = 72,969,603.12/13,890.42
  6. Step 6: Final answer
    x = 5,253.23

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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.