Home / 16,886.61-25,291.85-8,128.08

Finding the Fourth Proportional to 16,886.61, 25,291.85 and 8,128.08

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Solution

The fourth proportional to 16,886.61, 25,291.85 and 8,128.08 is: 12,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,886.61 : 25,291.85 = 8,128.08 : x
  2. Step 2: Convert to fraction form
    16,886.61/25,291.85 = 8,128.08/x
  3. Step 3: Cross multiply
    16,886.61x = 25,291.85 × 8,128.08
  4. Step 4: Simplify right side
    16,886.61x = 205,574,139.51
  5. Step 5: Solve for x
    x = 205,574,139.51/16,886.61
  6. Step 6: Final answer
    x = 12,173.80

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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.