Home / 14,288.40-21,311.10-12,081.15

Finding the Fourth Proportional to 14,288.40, 21,311.10 and 12,081.15

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Solution

The fourth proportional to 14,288.40, 21,311.10 and 12,081.15 is: 18,018.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,288.40 : 21,311.10 = 12,081.15 : x
  2. Step 2: Convert to fraction form
    14,288.40/21,311.10 = 12,081.15/x
  3. Step 3: Cross multiply
    14,288.40x = 21,311.10 × 12,081.15
  4. Step 4: Simplify right side
    14,288.40x = 257,462,595.77
  5. Step 5: Solve for x
    x = 257,462,595.77/14,288.40
  6. Step 6: Final answer
    x = 18,018.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.