Home / 13,551.05-18,700.70-8,173.46

Finding the Fourth Proportional to 13,551.05, 18,700.70 and 8,173.46

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Solution

The fourth proportional to 13,551.05, 18,700.70 and 8,173.46 is: 11,279.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.05 : 18,700.70 = 8,173.46 : x
  2. Step 2: Convert to fraction form
    13,551.05/18,700.70 = 8,173.46/x
  3. Step 3: Cross multiply
    13,551.05x = 18,700.70 × 8,173.46
  4. Step 4: Simplify right side
    13,551.05x = 152,849,423.42
  5. Step 5: Solve for x
    x = 152,849,423.42/13,551.05
  6. Step 6: Final answer
    x = 11,279.53

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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.