Home / 21,915.57-32,881.64-13,156.59

Finding the Fourth Proportional to 21,915.57, 32,881.64 and 13,156.59

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Solution

The fourth proportional to 21,915.57, 32,881.64 and 13,156.59 is: 19,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.57 : 32,881.64 = 13,156.59 : x
  2. Step 2: Convert to fraction form
    21,915.57/32,881.64 = 13,156.59/x
  3. Step 3: Cross multiply
    21,915.57x = 32,881.64 × 13,156.59
  4. Step 4: Simplify right side
    21,915.57x = 432,610,190.22
  5. Step 5: Solve for x
    x = 432,610,190.22/21,915.57
  6. Step 6: Final answer
    x = 19,739.86

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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.