Home / 20,859.42-31,247.45-12,534.93

Finding the Fourth Proportional to 20,859.42, 31,247.45 and 12,534.93

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Solution

The fourth proportional to 20,859.42, 31,247.45 and 12,534.93 is: 18,777.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.42 : 31,247.45 = 12,534.93 : x
  2. Step 2: Convert to fraction form
    20,859.42/31,247.45 = 12,534.93/x
  3. Step 3: Cross multiply
    20,859.42x = 31,247.45 × 12,534.93
  4. Step 4: Simplify right side
    20,859.42x = 391,684,459.62
  5. Step 5: Solve for x
    x = 391,684,459.62/20,859.42
  6. Step 6: Final answer
    x = 18,777.34

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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.