Home / 13,801.34-20,697.21-12,915.60

Finding the Fourth Proportional to 13,801.34, 20,697.21 and 12,915.60

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Solution

The fourth proportional to 13,801.34, 20,697.21 and 12,915.60 is: 19,368.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.34 : 20,697.21 = 12,915.60 : x
  2. Step 2: Convert to fraction form
    13,801.34/20,697.21 = 12,915.60/x
  3. Step 3: Cross multiply
    13,801.34x = 20,697.21 × 12,915.60
  4. Step 4: Simplify right side
    13,801.34x = 267,316,885.48
  5. Step 5: Solve for x
    x = 267,316,885.48/13,801.34
  6. Step 6: Final answer
    x = 19,368.92

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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.