Home / 13,385.47-18,474.54-7,723.88

Finding the Fourth Proportional to 13,385.47, 18,474.54 and 7,723.88

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Solution

The fourth proportional to 13,385.47, 18,474.54 and 7,723.88 is: 10,660.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.47 : 18,474.54 = 7,723.88 : x
  2. Step 2: Convert to fraction form
    13,385.47/18,474.54 = 7,723.88/x
  3. Step 3: Cross multiply
    13,385.47x = 18,474.54 × 7,723.88
  4. Step 4: Simplify right side
    13,385.47x = 142,695,130.02
  5. Step 5: Solve for x
    x = 142,695,130.02/13,385.47
  6. Step 6: Final answer
    x = 10,660.45

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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.