Home / 31,595.36-47,391.42-11,872.40

Finding the Fourth Proportional to 31,595.36, 47,391.42 and 11,872.40

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Solution

The fourth proportional to 31,595.36, 47,391.42 and 11,872.40 is: 17,807.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,595.36 : 47,391.42 = 11,872.40 : x
  2. Step 2: Convert to fraction form
    31,595.36/47,391.42 = 11,872.40/x
  3. Step 3: Cross multiply
    31,595.36x = 47,391.42 × 11,872.40
  4. Step 4: Simplify right side
    31,595.36x = 562,649,894.81
  5. Step 5: Solve for x
    x = 562,649,894.81/31,595.36
  6. Step 6: Final answer
    x = 17,807.99

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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.