Home / 13,855.02-19,120.04-7,887.14

Finding the Fourth Proportional to 13,855.02, 19,120.04 and 7,887.14

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Solution

The fourth proportional to 13,855.02, 19,120.04 and 7,887.14 is: 10,884.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.02 : 19,120.04 = 7,887.14 : x
  2. Step 2: Convert to fraction form
    13,855.02/19,120.04 = 7,887.14/x
  3. Step 3: Cross multiply
    13,855.02x = 19,120.04 × 7,887.14
  4. Step 4: Simplify right side
    13,855.02x = 150,802,432.29
  5. Step 5: Solve for x
    x = 150,802,432.29/13,855.02
  6. Step 6: Final answer
    x = 10,884.32

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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.