Home / 31,722.35-47,579.81-12,746.22

Finding the Fourth Proportional to 31,722.35, 47,579.81 and 12,746.22

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Solution

The fourth proportional to 31,722.35, 47,579.81 and 12,746.22 is: 19,117.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,722.35 : 47,579.81 = 12,746.22 : x
  2. Step 2: Convert to fraction form
    31,722.35/47,579.81 = 12,746.22/x
  3. Step 3: Cross multiply
    31,722.35x = 47,579.81 × 12,746.22
  4. Step 4: Simplify right side
    31,722.35x = 606,462,725.82
  5. Step 5: Solve for x
    x = 606,462,725.82/31,722.35
  6. Step 6: Final answer
    x = 19,117.84

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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.