Home / 15,353.28-21,178.80-10,629.36

Finding the Fourth Proportional to 15,353.28, 21,178.80 and 10,629.36

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Solution

The fourth proportional to 15,353.28, 21,178.80 and 10,629.36 is: 14,662.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,353.28 : 21,178.80 = 10,629.36 : x
  2. Step 2: Convert to fraction form
    15,353.28/21,178.80 = 10,629.36/x
  3. Step 3: Cross multiply
    15,353.28x = 21,178.80 × 10,629.36
  4. Step 4: Simplify right side
    15,353.28x = 225,117,089.57
  5. Step 5: Solve for x
    x = 225,117,089.57/15,353.28
  6. Step 6: Final answer
    x = 14,662.48

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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.