Home / 31,579.09-47,340.77-12,874.77

Finding the Fourth Proportional to 31,579.09, 47,340.77 and 12,874.77

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Solution

The fourth proportional to 31,579.09, 47,340.77 and 12,874.77 is: 19,300.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,579.09 : 47,340.77 = 12,874.77 : x
  2. Step 2: Convert to fraction form
    31,579.09/47,340.77 = 12,874.77/x
  3. Step 3: Cross multiply
    31,579.09x = 47,340.77 × 12,874.77
  4. Step 4: Simplify right side
    31,579.09x = 609,501,461.00
  5. Step 5: Solve for x
    x = 609,501,461.00/31,579.09
  6. Step 6: Final answer
    x = 19,300.79

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1.5x scale

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.