Home / 28,911.68-39,897-16,336.68

Finding the Fourth Proportional to 28,911.68, 39,897 and 16,336.68

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Solution

The fourth proportional to 28,911.68, 39,897 and 16,336.68 is: 22,543.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.68 : 39,897 = 16,336.68 : x
  2. Step 2: Convert to fraction form
    28,911.68/39,897 = 16,336.68/x
  3. Step 3: Cross multiply
    28,911.68x = 39,897 × 16,336.68
  4. Step 4: Simplify right side
    28,911.68x = 651,784,521.96
  5. Step 5: Solve for x
    x = 651,784,521.96/28,911.68
  6. Step 6: Final answer
    x = 22,543.99

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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.