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Finding the Fourth Proportional to 14,909.94, 20,574.44 and 8,776.99

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Solution

The fourth proportional to 14,909.94, 20,574.44 and 8,776.99 is: 12,111.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,909.94 : 20,574.44 = 8,776.99 : x
  2. Step 2: Convert to fraction form
    14,909.94/20,574.44 = 8,776.99/x
  3. Step 3: Cross multiply
    14,909.94x = 20,574.44 × 8,776.99
  4. Step 4: Simplify right side
    14,909.94x = 180,581,668.88
  5. Step 5: Solve for x
    x = 180,581,668.88/14,909.94
  6. Step 6: Final answer
    x = 12,111.50

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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.