Home / 10,130.80-14,027.16-9,936.40

Finding the Fourth Proportional to 10,130.80, 14,027.16 and 9,936.40

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Solution

The fourth proportional to 10,130.80, 14,027.16 and 9,936.40 is: 13,757.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.80 : 14,027.16 = 9,936.40 : x
  2. Step 2: Convert to fraction form
    10,130.80/14,027.16 = 9,936.40/x
  3. Step 3: Cross multiply
    10,130.80x = 14,027.16 × 9,936.40
  4. Step 4: Simplify right side
    10,130.80x = 139,379,472.62
  5. Step 5: Solve for x
    x = 139,379,472.62/10,130.80
  6. Step 6: Final answer
    x = 13,757.99

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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.