Home / 11,878.32-16,389.40-9,045.04

Finding the Fourth Proportional to 11,878.32, 16,389.40 and 9,045.04

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Solution

The fourth proportional to 11,878.32, 16,389.40 and 9,045.04 is: 12,480.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,878.32 : 16,389.40 = 9,045.04 : x
  2. Step 2: Convert to fraction form
    11,878.32/16,389.40 = 9,045.04/x
  3. Step 3: Cross multiply
    11,878.32x = 16,389.40 × 9,045.04
  4. Step 4: Simplify right side
    11,878.32x = 148,242,778.58
  5. Step 5: Solve for x
    x = 148,242,778.58/11,878.32
  6. Step 6: Final answer
    x = 12,480.11

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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.