Home / 13,565.88-20,369.48-12,897.63

Finding the Fourth Proportional to 13,565.88, 20,369.48 and 12,897.63

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Solution

The fourth proportional to 13,565.88, 20,369.48 and 12,897.63 is: 19,366.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.88 : 20,369.48 = 12,897.63 : x
  2. Step 2: Convert to fraction form
    13,565.88/20,369.48 = 12,897.63/x
  3. Step 3: Cross multiply
    13,565.88x = 20,369.48 × 12,897.63
  4. Step 4: Simplify right side
    13,565.88x = 262,717,951.84
  5. Step 5: Solve for x
    x = 262,717,951.84/13,565.88
  6. Step 6: Final answer
    x = 19,366.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.