Home / 21,039.67-29,036.48-12,088.90

Finding the Fourth Proportional to 21,039.67, 29,036.48 and 12,088.90

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Solution

The fourth proportional to 21,039.67, 29,036.48 and 12,088.90 is: 16,683.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,039.67 : 29,036.48 = 12,088.90 : x
  2. Step 2: Convert to fraction form
    21,039.67/29,036.48 = 12,088.90/x
  3. Step 3: Cross multiply
    21,039.67x = 29,036.48 × 12,088.90
  4. Step 4: Simplify right side
    21,039.67x = 351,019,103.07
  5. Step 5: Solve for x
    x = 351,019,103.07/21,039.67
  6. Step 6: Final answer
    x = 16,683.68

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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.