Home / 13,728.42-20,615.40-8,567.10

Finding the Fourth Proportional to 13,728.42, 20,615.40 and 8,567.10

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Solution

The fourth proportional to 13,728.42, 20,615.40 and 8,567.10 is: 12,864.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.42 : 20,615.40 = 8,567.10 : x
  2. Step 2: Convert to fraction form
    13,728.42/20,615.40 = 8,567.10/x
  3. Step 3: Cross multiply
    13,728.42x = 20,615.40 × 8,567.10
  4. Step 4: Simplify right side
    13,728.42x = 176,614,193.34
  5. Step 5: Solve for x
    x = 176,614,193.34/13,728.42
  6. Step 6: Final answer
    x = 12,864.86

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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.