Home / 14,320.80-19,768.90-13,424.12

Finding the Fourth Proportional to 14,320.80, 19,768.90 and 13,424.12

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Solution

The fourth proportional to 14,320.80, 19,768.90 and 13,424.12 is: 18,531.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,320.80 : 19,768.90 = 13,424.12 : x
  2. Step 2: Convert to fraction form
    14,320.80/19,768.90 = 13,424.12/x
  3. Step 3: Cross multiply
    14,320.80x = 19,768.90 × 13,424.12
  4. Step 4: Simplify right side
    14,320.80x = 265,380,085.87
  5. Step 5: Solve for x
    x = 265,380,085.87/14,320.80
  6. Step 6: Final answer
    x = 18,531.09

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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.