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Finding the Fourth Proportional to 13,043.68, 18,000.50 and 7,454.68

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Solution

The fourth proportional to 13,043.68, 18,000.50 and 7,454.68 is: 10,287.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,043.68 : 18,000.50 = 7,454.68 : x
  2. Step 2: Convert to fraction form
    13,043.68/18,000.50 = 7,454.68/x
  3. Step 3: Cross multiply
    13,043.68x = 18,000.50 × 7,454.68
  4. Step 4: Simplify right side
    13,043.68x = 134,187,967.34
  5. Step 5: Solve for x
    x = 134,187,967.34/13,043.68
  6. Step 6: Final answer
    x = 10,287.59

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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.