Home / 20,611.40-28,444.24-11,658.48

Finding the Fourth Proportional to 20,611.40, 28,444.24 and 11,658.48

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Solution

The fourth proportional to 20,611.40, 28,444.24 and 11,658.48 is: 16,088.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,611.40 : 28,444.24 = 11,658.48 : x
  2. Step 2: Convert to fraction form
    20,611.40/28,444.24 = 11,658.48/x
  3. Step 3: Cross multiply
    20,611.40x = 28,444.24 × 11,658.48
  4. Step 4: Simplify right side
    20,611.40x = 331,616,603.16
  5. Step 5: Solve for x
    x = 331,616,603.16/20,611.40
  6. Step 6: Final answer
    x = 16,088.99

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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.