Home / 19,887.04-27,452.82-13,428.10

Finding the Fourth Proportional to 19,887.04, 27,452.82 and 13,428.10

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Solution

The fourth proportional to 19,887.04, 27,452.82 and 13,428.10 is: 18,536.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,887.04 : 27,452.82 = 13,428.10 : x
  2. Step 2: Convert to fraction form
    19,887.04/27,452.82 = 13,428.10/x
  3. Step 3: Cross multiply
    19,887.04x = 27,452.82 × 13,428.10
  4. Step 4: Simplify right side
    19,887.04x = 368,639,212.24
  5. Step 5: Solve for x
    x = 368,639,212.24/19,887.04
  6. Step 6: Final answer
    x = 18,536.66

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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.