Home / 31,579.28-47,327.91-12,837.50

Finding the Fourth Proportional to 31,579.28, 47,327.91 and 12,837.50

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Solution

The fourth proportional to 31,579.28, 47,327.91 and 12,837.50 is: 19,239.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.28 : 47,327.91 = 12,837.50 : x
  2. Step 2: Convert to fraction form
    31,579.28/47,327.91 = 12,837.50/x
  3. Step 3: Cross multiply
    31,579.28x = 47,327.91 × 12,837.50
  4. Step 4: Simplify right side
    31,579.28x = 607,572,044.63
  5. Step 5: Solve for x
    x = 607,572,044.63/31,579.28
  6. Step 6: Final answer
    x = 19,239.58

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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.