Home / 21,014.37-31,500.29-13,623.53

Finding the Fourth Proportional to 21,014.37, 31,500.29 and 13,623.53

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Solution

The fourth proportional to 21,014.37, 31,500.29 and 13,623.53 is: 20,421.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,014.37 : 31,500.29 = 13,623.53 : x
  2. Step 2: Convert to fraction form
    21,014.37/31,500.29 = 13,623.53/x
  3. Step 3: Cross multiply
    21,014.37x = 31,500.29 × 13,623.53
  4. Step 4: Simplify right side
    21,014.37x = 429,145,022.38
  5. Step 5: Solve for x
    x = 429,145,022.38/21,014.37
  6. Step 6: Final answer
    x = 20,421.50

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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.