Home / 27,509.86-37,981.25-18,910.34

Finding the Fourth Proportional to 27,509.86, 37,981.25 and 18,910.34

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Solution

The fourth proportional to 27,509.86, 37,981.25 and 18,910.34 is: 26,108.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,509.86 : 37,981.25 = 18,910.34 : x
  2. Step 2: Convert to fraction form
    27,509.86/37,981.25 = 18,910.34/x
  3. Step 3: Cross multiply
    27,509.86x = 37,981.25 × 18,910.34
  4. Step 4: Simplify right side
    27,509.86x = 718,238,493.66
  5. Step 5: Solve for x
    x = 718,238,493.66/27,509.86
  6. Step 6: Final answer
    x = 26,108.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.