Home / 15,426.57-21,288.81-8,353.14

Finding the Fourth Proportional to 15,426.57, 21,288.81 and 8,353.14

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Solution

The fourth proportional to 15,426.57, 21,288.81 and 8,353.14 is: 11,527.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,426.57 : 21,288.81 = 8,353.14 : x
  2. Step 2: Convert to fraction form
    15,426.57/21,288.81 = 8,353.14/x
  3. Step 3: Cross multiply
    15,426.57x = 21,288.81 × 8,353.14
  4. Step 4: Simplify right side
    15,426.57x = 177,828,410.36
  5. Step 5: Solve for x
    x = 177,828,410.36/15,426.57
  6. Step 6: Final answer
    x = 11,527.41

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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.