Home / 11,828.04-16,320.48-7,112.40

Finding the Fourth Proportional to 11,828.04, 16,320.48 and 7,112.40

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Solution

The fourth proportional to 11,828.04, 16,320.48 and 7,112.40 is: 9,813.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,828.04 : 16,320.48 = 7,112.40 : x
  2. Step 2: Convert to fraction form
    11,828.04/16,320.48 = 7,112.40/x
  3. Step 3: Cross multiply
    11,828.04x = 16,320.48 × 7,112.40
  4. Step 4: Simplify right side
    11,828.04x = 116,077,781.95
  5. Step 5: Solve for x
    x = 116,077,781.95/11,828.04
  6. Step 6: Final answer
    x = 9,813.78

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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.