Home / 29,318.72-40,459.81-15,889.97

Finding the Fourth Proportional to 29,318.72, 40,459.81 and 15,889.97

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Solution

The fourth proportional to 29,318.72, 40,459.81 and 15,889.97 is: 21,928.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,318.72 : 40,459.81 = 15,889.97 : x
  2. Step 2: Convert to fraction form
    29,318.72/40,459.81 = 15,889.97/x
  3. Step 3: Cross multiply
    29,318.72x = 40,459.81 × 15,889.97
  4. Step 4: Simplify right side
    29,318.72x = 642,905,228.53
  5. Step 5: Solve for x
    x = 642,905,228.53/29,318.72
  6. Step 6: Final answer
    x = 21,928.15

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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.