Home / 20,859.81-31,235.04-14,298.81

Finding the Fourth Proportional to 20,859.81, 31,235.04 and 14,298.81

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Solution

The fourth proportional to 20,859.81, 31,235.04 and 14,298.81 is: 21,410.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.81 : 31,235.04 = 14,298.81 : x
  2. Step 2: Convert to fraction form
    20,859.81/31,235.04 = 14,298.81/x
  3. Step 3: Cross multiply
    20,859.81x = 31,235.04 × 14,298.81
  4. Step 4: Simplify right side
    20,859.81x = 446,623,902.30
  5. Step 5: Solve for x
    x = 446,623,902.30/20,859.81
  6. Step 6: Final answer
    x = 21,410.74

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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.