Home / 12,390.48-18,592.34-5,816.75

Finding the Fourth Proportional to 12,390.48, 18,592.34 and 5,816.75

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Solution

The fourth proportional to 12,390.48, 18,592.34 and 5,816.75 is: 8,728.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.48 : 18,592.34 = 5,816.75 : x
  2. Step 2: Convert to fraction form
    12,390.48/18,592.34 = 5,816.75/x
  3. Step 3: Cross multiply
    12,390.48x = 18,592.34 × 5,816.75
  4. Step 4: Simplify right side
    12,390.48x = 108,146,871.65
  5. Step 5: Solve for x
    x = 108,146,871.65/12,390.48
  6. Step 6: Final answer
    x = 8,728.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.