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Finding the Fourth Proportional to 14,290.99, 19,715.50 and 8,983.87

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Solution

The fourth proportional to 14,290.99, 19,715.50 and 8,983.87 is: 12,393.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.99 : 19,715.50 = 8,983.87 : x
  2. Step 2: Convert to fraction form
    14,290.99/19,715.50 = 8,983.87/x
  3. Step 3: Cross multiply
    14,290.99x = 19,715.50 × 8,983.87
  4. Step 4: Simplify right side
    14,290.99x = 177,121,417.24
  5. Step 5: Solve for x
    x = 177,121,417.24/14,290.99
  6. Step 6: Final answer
    x = 12,393.92

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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.