Home / 13,251.37-18,303.06-9,909.04

Finding the Fourth Proportional to 13,251.37, 18,303.06 and 9,909.04

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Solution

The fourth proportional to 13,251.37, 18,303.06 and 9,909.04 is: 13,686.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.37 : 18,303.06 = 9,909.04 : x
  2. Step 2: Convert to fraction form
    13,251.37/18,303.06 = 9,909.04/x
  3. Step 3: Cross multiply
    13,251.37x = 18,303.06 × 9,909.04
  4. Step 4: Simplify right side
    13,251.37x = 181,365,753.66
  5. Step 5: Solve for x
    x = 181,365,753.66/13,251.37
  6. Step 6: Final answer
    x = 13,686.57

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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.