Home / 21,899.72-30,217.14-12,465.80

Finding the Fourth Proportional to 21,899.72, 30,217.14 and 12,465.80

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Solution

The fourth proportional to 21,899.72, 30,217.14 and 12,465.80 is: 17,200.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.72 : 30,217.14 = 12,465.80 : x
  2. Step 2: Convert to fraction form
    21,899.72/30,217.14 = 12,465.80/x
  3. Step 3: Cross multiply
    21,899.72x = 30,217.14 × 12,465.80
  4. Step 4: Simplify right side
    21,899.72x = 376,680,823.81
  5. Step 5: Solve for x
    x = 376,680,823.81/21,899.72
  6. Step 6: Final answer
    x = 17,200.26

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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.