Home / 13,041.20-18,001.12-7,936.64

Finding the Fourth Proportional to 13,041.20, 18,001.12 and 7,936.64

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Solution

The fourth proportional to 13,041.20, 18,001.12 and 7,936.64 is: 10,955.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,041.20 : 18,001.12 = 7,936.64 : x
  2. Step 2: Convert to fraction form
    13,041.20/18,001.12 = 7,936.64/x
  3. Step 3: Cross multiply
    13,041.20x = 18,001.12 × 7,936.64
  4. Step 4: Simplify right side
    13,041.20x = 142,868,409.04
  5. Step 5: Solve for x
    x = 142,868,409.04/13,041.20
  6. Step 6: Final answer
    x = 10,955.16

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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.