Home / 27,129.86-40,638.88-13,048.32

Finding the Fourth Proportional to 27,129.86, 40,638.88 and 13,048.32

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Solution

The fourth proportional to 27,129.86, 40,638.88 and 13,048.32 is: 19,545.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,129.86 : 40,638.88 = 13,048.32 : x
  2. Step 2: Convert to fraction form
    27,129.86/40,638.88 = 13,048.32/x
  3. Step 3: Cross multiply
    27,129.86x = 40,638.88 × 13,048.32
  4. Step 4: Simplify right side
    27,129.86x = 530,269,110.68
  5. Step 5: Solve for x
    x = 530,269,110.68/27,129.86
  6. Step 6: Final answer
    x = 19,545.59

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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.