Home / 13,558.69-20,281.88-12,729.25

Finding the Fourth Proportional to 13,558.69, 20,281.88 and 12,729.25

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Solution

The fourth proportional to 13,558.69, 20,281.88 and 12,729.25 is: 19,041.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.69 : 20,281.88 = 12,729.25 : x
  2. Step 2: Convert to fraction form
    13,558.69/20,281.88 = 12,729.25/x
  3. Step 3: Cross multiply
    13,558.69x = 20,281.88 × 12,729.25
  4. Step 4: Simplify right side
    13,558.69x = 258,173,057.34
  5. Step 5: Solve for x
    x = 258,173,057.34/13,558.69
  6. Step 6: Final answer
    x = 19,041.15

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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.