Home / 15,158.48-20,923.84-10,381.28

Finding the Fourth Proportional to 15,158.48, 20,923.84 and 10,381.28

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Solution

The fourth proportional to 15,158.48, 20,923.84 and 10,381.28 is: 14,329.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,158.48 : 20,923.84 = 10,381.28 : x
  2. Step 2: Convert to fraction form
    15,158.48/20,923.84 = 10,381.28/x
  3. Step 3: Cross multiply
    15,158.48x = 20,923.84 × 10,381.28
  4. Step 4: Simplify right side
    15,158.48x = 217,216,241.72
  5. Step 5: Solve for x
    x = 217,216,241.72/15,158.48
  6. Step 6: Final answer
    x = 14,329.68

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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.