Home / 13,440.60-18,548.50-7,391.30

Finding the Fourth Proportional to 13,440.60, 18,548.50 and 7,391.30

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Solution

The fourth proportional to 13,440.60, 18,548.50 and 7,391.30 is: 10,200.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.60 : 18,548.50 = 7,391.30 : x
  2. Step 2: Convert to fraction form
    13,440.60/18,548.50 = 7,391.30/x
  3. Step 3: Cross multiply
    13,440.60x = 18,548.50 × 7,391.30
  4. Step 4: Simplify right side
    13,440.60x = 137,097,398.35
  5. Step 5: Solve for x
    x = 137,097,398.35/13,440.60
  6. Step 6: Final answer
    x = 10,200.25

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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.