Home / 13,685.72-20,527.80-5,784.92

Finding the Fourth Proportional to 13,685.72, 20,527.80 and 5,784.92

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Solution

The fourth proportional to 13,685.72, 20,527.80 and 5,784.92 is: 8,677.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.72 : 20,527.80 = 5,784.92 : x
  2. Step 2: Convert to fraction form
    13,685.72/20,527.80 = 5,784.92/x
  3. Step 3: Cross multiply
    13,685.72x = 20,527.80 × 5,784.92
  4. Step 4: Simplify right side
    13,685.72x = 118,751,680.78
  5. Step 5: Solve for x
    x = 118,751,680.78/13,685.72
  6. Step 6: Final answer
    x = 8,677.05

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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.