Home / 19,692.86-27,180.53-12,521.39

Finding the Fourth Proportional to 19,692.86, 27,180.53 and 12,521.39

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Solution

The fourth proportional to 19,692.86, 27,180.53 and 12,521.39 is: 17,282.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,692.86 : 27,180.53 = 12,521.39 : x
  2. Step 2: Convert to fraction form
    19,692.86/27,180.53 = 12,521.39/x
  3. Step 3: Cross multiply
    19,692.86x = 27,180.53 × 12,521.39
  4. Step 4: Simplify right side
    19,692.86x = 340,337,864.98
  5. Step 5: Solve for x
    x = 340,337,864.98/19,692.86
  6. Step 6: Final answer
    x = 17,282.30

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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.