Home / 28,960.48-39,966.40-16,384.96

Finding the Fourth Proportional to 28,960.48, 39,966.40 and 16,384.96

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Solution

The fourth proportional to 28,960.48, 39,966.40 and 16,384.96 is: 22,611.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,960.48 : 39,966.40 = 16,384.96 : x
  2. Step 2: Convert to fraction form
    28,960.48/39,966.40 = 16,384.96/x
  3. Step 3: Cross multiply
    28,960.48x = 39,966.40 × 16,384.96
  4. Step 4: Simplify right side
    28,960.48x = 654,847,865.34
  5. Step 5: Solve for x
    x = 654,847,865.34/28,960.48
  6. Step 6: Final answer
    x = 22,611.78

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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.