Home / 14,186.61-19,579.95-8,221.95

Finding the Fourth Proportional to 14,186.61, 19,579.95 and 8,221.95

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Solution

The fourth proportional to 14,186.61, 19,579.95 and 8,221.95 is: 11,347.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,186.61 : 19,579.95 = 8,221.95 : x
  2. Step 2: Convert to fraction form
    14,186.61/19,579.95 = 8,221.95/x
  3. Step 3: Cross multiply
    14,186.61x = 19,579.95 × 8,221.95
  4. Step 4: Simplify right side
    14,186.61x = 160,985,369.90
  5. Step 5: Solve for x
    x = 160,985,369.90/14,186.61
  6. Step 6: Final answer
    x = 11,347.70

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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.