Home / 13,539.54-20,315.37-8,607.90

Finding the Fourth Proportional to 13,539.54, 20,315.37 and 8,607.90

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Solution

The fourth proportional to 13,539.54, 20,315.37 and 8,607.90 is: 12,915.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.54 : 20,315.37 = 8,607.90 : x
  2. Step 2: Convert to fraction form
    13,539.54/20,315.37 = 8,607.90/x
  3. Step 3: Cross multiply
    13,539.54x = 20,315.37 × 8,607.90
  4. Step 4: Simplify right side
    13,539.54x = 174,872,673.42
  5. Step 5: Solve for x
    x = 174,872,673.42/13,539.54
  6. Step 6: Final answer
    x = 12,915.70

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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.