Home / 15,426.96-21,289.04-8,353.28

Finding the Fourth Proportional to 15,426.96, 21,289.04 and 8,353.28

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Solution

The fourth proportional to 15,426.96, 21,289.04 and 8,353.28 is: 11,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,426.96 : 21,289.04 = 8,353.28 : x
  2. Step 2: Convert to fraction form
    15,426.96/21,289.04 = 8,353.28/x
  3. Step 3: Cross multiply
    15,426.96x = 21,289.04 × 8,353.28
  4. Step 4: Simplify right side
    15,426.96x = 177,833,312.05
  5. Step 5: Solve for x
    x = 177,833,312.05/15,426.96
  6. Step 6: Final answer
    x = 11,527.44

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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.