Home / 20,861.32-31,237.28-14,300.32

Finding the Fourth Proportional to 20,861.32, 31,237.28 and 14,300.32

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Solution

The fourth proportional to 20,861.32, 31,237.28 and 14,300.32 is: 21,412.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.32 : 31,237.28 = 14,300.32 : x
  2. Step 2: Convert to fraction form
    20,861.32/31,237.28 = 14,300.32/x
  3. Step 3: Cross multiply
    20,861.32x = 31,237.28 × 14,300.32
  4. Step 4: Simplify right side
    20,861.32x = 446,703,099.93
  5. Step 5: Solve for x
    x = 446,703,099.93/20,861.32
  6. Step 6: Final answer
    x = 21,412.98

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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.