Home / 13,830.48-19,086.84-12,897.36

Finding the Fourth Proportional to 13,830.48, 19,086.84 and 12,897.36

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Solution

The fourth proportional to 13,830.48, 19,086.84 and 12,897.36 is: 17,799.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.48 : 19,086.84 = 12,897.36 : x
  2. Step 2: Convert to fraction form
    13,830.48/19,086.84 = 12,897.36/x
  3. Step 3: Cross multiply
    13,830.48x = 19,086.84 × 12,897.36
  4. Step 4: Simplify right side
    13,830.48x = 246,169,846.74
  5. Step 5: Solve for x
    x = 246,169,846.74/13,830.48
  6. Step 6: Final answer
    x = 17,799.08

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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.