Home / 15,426.70-21,288.88-8,353.13

Finding the Fourth Proportional to 15,426.70, 21,288.88 and 8,353.13

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Solution

The fourth proportional to 15,426.70, 21,288.88 and 8,353.13 is: 11,527.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,426.70 : 21,288.88 = 8,353.13 : x
  2. Step 2: Convert to fraction form
    15,426.70/21,288.88 = 8,353.13/x
  3. Step 3: Cross multiply
    15,426.70x = 21,288.88 × 8,353.13
  4. Step 4: Simplify right side
    15,426.70x = 177,828,639.21
  5. Step 5: Solve for x
    x = 177,828,639.21/15,426.70
  6. Step 6: Final answer
    x = 11,527.33

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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.