Home / 14,160.84-21,252.20-9,991.91

Finding the Fourth Proportional to 14,160.84, 21,252.20 and 9,991.91

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Solution

The fourth proportional to 14,160.84, 21,252.20 and 9,991.91 is: 14,995.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,160.84 : 21,252.20 = 9,991.91 : x
  2. Step 2: Convert to fraction form
    14,160.84/21,252.20 = 9,991.91/x
  3. Step 3: Cross multiply
    14,160.84x = 21,252.20 × 9,991.91
  4. Step 4: Simplify right side
    14,160.84x = 212,349,913.48
  5. Step 5: Solve for x
    x = 212,349,913.48/14,160.84
  6. Step 6: Final answer
    x = 14,995.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.