Home / 13,157.17-18,154.61-7,851.67

Finding the Fourth Proportional to 13,157.17, 18,154.61 and 7,851.67

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Solution

The fourth proportional to 13,157.17, 18,154.61 and 7,851.67 is: 10,833.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,157.17 : 18,154.61 = 7,851.67 : x
  2. Step 2: Convert to fraction form
    13,157.17/18,154.61 = 7,851.67/x
  3. Step 3: Cross multiply
    13,157.17x = 18,154.61 × 7,851.67
  4. Step 4: Simplify right side
    13,157.17x = 142,543,967.44
  5. Step 5: Solve for x
    x = 142,543,967.44/13,157.17
  6. Step 6: Final answer
    x = 10,833.94

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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.