Home / 13,875.05-20,812.76-4,515.11

Finding the Fourth Proportional to 13,875.05, 20,812.76 and 4,515.11

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Solution

The fourth proportional to 13,875.05, 20,812.76 and 4,515.11 is: 6,772.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,875.05 : 20,812.76 = 4,515.11 : x
  2. Step 2: Convert to fraction form
    13,875.05/20,812.76 = 4,515.11/x
  3. Step 3: Cross multiply
    13,875.05x = 20,812.76 × 4,515.11
  4. Step 4: Simplify right side
    13,875.05x = 93,971,964.12
  5. Step 5: Solve for x
    x = 93,971,964.12/13,875.05
  6. Step 6: Final answer
    x = 6,772.73

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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.