Home / 28,706.09-39,612.53-16,128.41

Finding the Fourth Proportional to 28,706.09, 39,612.53 and 16,128.41

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Solution

The fourth proportional to 28,706.09, 39,612.53 and 16,128.41 is: 22,256.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,706.09 : 39,612.53 = 16,128.41 : x
  2. Step 2: Convert to fraction form
    28,706.09/39,612.53 = 16,128.41/x
  3. Step 3: Cross multiply
    28,706.09x = 39,612.53 × 16,128.41
  4. Step 4: Simplify right side
    28,706.09x = 638,887,044.34
  5. Step 5: Solve for x
    x = 638,887,044.34/28,706.09
  6. Step 6: Final answer
    x = 22,256.15

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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.