Home / 14,395.16-19,870.73-8,428.75

Finding the Fourth Proportional to 14,395.16, 19,870.73 and 8,428.75

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Solution

The fourth proportional to 14,395.16, 19,870.73 and 8,428.75 is: 11,634.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,395.16 : 19,870.73 = 8,428.75 : x
  2. Step 2: Convert to fraction form
    14,395.16/19,870.73 = 8,428.75/x
  3. Step 3: Cross multiply
    14,395.16x = 19,870.73 × 8,428.75
  4. Step 4: Simplify right side
    14,395.16x = 167,485,415.49
  5. Step 5: Solve for x
    x = 167,485,415.49/14,395.16
  6. Step 6: Final answer
    x = 11,634.84

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Half scale
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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.