Home / 27,827.61-38,403.99-15,723.90

Finding the Fourth Proportional to 27,827.61, 38,403.99 and 15,723.90

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Solution

The fourth proportional to 27,827.61, 38,403.99 and 15,723.90 is: 21,700.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,827.61 : 38,403.99 = 15,723.90 : x
  2. Step 2: Convert to fraction form
    27,827.61/38,403.99 = 15,723.90/x
  3. Step 3: Cross multiply
    27,827.61x = 38,403.99 × 15,723.90
  4. Step 4: Simplify right side
    27,827.61x = 603,860,498.36
  5. Step 5: Solve for x
    x = 603,860,498.36/27,827.61
  6. Step 6: Final answer
    x = 21,700.05

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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.