Home / 21,915.67-30,243.36-12,484.21

Finding the Fourth Proportional to 21,915.67, 30,243.36 and 12,484.21

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Solution

The fourth proportional to 21,915.67, 30,243.36 and 12,484.21 is: 17,228.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.67 : 30,243.36 = 12,484.21 : x
  2. Step 2: Convert to fraction form
    21,915.67/30,243.36 = 12,484.21/x
  3. Step 3: Cross multiply
    21,915.67x = 30,243.36 × 12,484.21
  4. Step 4: Simplify right side
    21,915.67x = 377,564,457.35
  5. Step 5: Solve for x
    x = 377,564,457.35/21,915.67
  6. Step 6: Final answer
    x = 17,228.06

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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.