Home / 14,142.84-19,518.30-7,855.80

Finding the Fourth Proportional to 14,142.84, 19,518.30 and 7,855.80

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Solution

The fourth proportional to 14,142.84, 19,518.30 and 7,855.80 is: 10,841.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,142.84 : 19,518.30 = 7,855.80 : x
  2. Step 2: Convert to fraction form
    14,142.84/19,518.30 = 7,855.80/x
  3. Step 3: Cross multiply
    14,142.84x = 19,518.30 × 7,855.80
  4. Step 4: Simplify right side
    14,142.84x = 153,331,861.14
  5. Step 5: Solve for x
    x = 153,331,861.14/14,142.84
  6. Step 6: Final answer
    x = 10,841.66

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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.