Home / 13,643.02-20,460.12-5,320.99

Finding the Fourth Proportional to 13,643.02, 20,460.12 and 5,320.99

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Solution

The fourth proportional to 13,643.02, 20,460.12 and 5,320.99 is: 7,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,643.02 : 20,460.12 = 5,320.99 : x
  2. Step 2: Convert to fraction form
    13,643.02/20,460.12 = 5,320.99/x
  3. Step 3: Cross multiply
    13,643.02x = 20,460.12 × 5,320.99
  4. Step 4: Simplify right side
    13,643.02x = 108,868,093.92
  5. Step 5: Solve for x
    x = 108,868,093.92/13,643.02
  6. Step 6: Final answer
    x = 7,979.77

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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.