Home / 19,877.00-27,401.36-13,890.08

Finding the Fourth Proportional to 19,877.00, 27,401.36 and 13,890.08

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Solution

The fourth proportional to 19,877.00, 27,401.36 and 13,890.08 is: 19,148.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.00 : 27,401.36 = 13,890.08 : x
  2. Step 2: Convert to fraction form
    19,877.00/27,401.36 = 13,890.08/x
  3. Step 3: Cross multiply
    19,877.00x = 27,401.36 × 13,890.08
  4. Step 4: Simplify right side
    19,877.00x = 380,607,081.56
  5. Step 5: Solve for x
    x = 380,607,081.56/19,877.00
  6. Step 6: Final answer
    x = 19,148.12

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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.