Home / 13,628.19-18,807.12-7,659.84

Finding the Fourth Proportional to 13,628.19, 18,807.12 and 7,659.84

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Solution

The fourth proportional to 13,628.19, 18,807.12 and 7,659.84 is: 10,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,628.19 : 18,807.12 = 7,659.84 : x
  2. Step 2: Convert to fraction form
    13,628.19/18,807.12 = 7,659.84/x
  3. Step 3: Cross multiply
    13,628.19x = 18,807.12 × 7,659.84
  4. Step 4: Simplify right side
    13,628.19x = 144,059,530.06
  5. Step 5: Solve for x
    x = 144,059,530.06/13,628.19
  6. Step 6: Final answer
    x = 10,570.70

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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.