Home / 13,685.72-20,526.80-4,326.68

Finding the Fourth Proportional to 13,685.72, 20,526.80 and 4,326.68

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Solution

The fourth proportional to 13,685.72, 20,526.80 and 4,326.68 is: 6,489.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.72 : 20,526.80 = 4,326.68 : x
  2. Step 2: Convert to fraction form
    13,685.72/20,526.80 = 4,326.68/x
  3. Step 3: Cross multiply
    13,685.72x = 20,526.80 × 4,326.68
  4. Step 4: Simplify right side
    13,685.72x = 88,812,770.76
  5. Step 5: Solve for x
    x = 88,812,770.76/13,685.72
  6. Step 6: Final answer
    x = 6,489.45

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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.