Home / 13,567.84-18,720.48-8,530.72

Finding the Fourth Proportional to 13,567.84, 18,720.48 and 8,530.72

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Solution

The fourth proportional to 13,567.84, 18,720.48 and 8,530.72 is: 11,770.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,567.84 : 18,720.48 = 8,530.72 : x
  2. Step 2: Convert to fraction form
    13,567.84/18,720.48 = 8,530.72/x
  3. Step 3: Cross multiply
    13,567.84x = 18,720.48 × 8,530.72
  4. Step 4: Simplify right side
    13,567.84x = 159,699,173.15
  5. Step 5: Solve for x
    x = 159,699,173.15/13,567.84
  6. Step 6: Final answer
    x = 11,770.42

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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.