Home / 21,025.86-31,560.66-15,485.46

Finding the Fourth Proportional to 21,025.86, 31,560.66 and 15,485.46

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Solution

The fourth proportional to 21,025.86, 31,560.66 and 15,485.46 is: 23,244.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.86 : 31,560.66 = 15,485.46 : x
  2. Step 2: Convert to fraction form
    21,025.86/31,560.66 = 15,485.46/x
  3. Step 3: Cross multiply
    21,025.86x = 31,560.66 × 15,485.46
  4. Step 4: Simplify right side
    21,025.86x = 488,731,338.00
  5. Step 5: Solve for x
    x = 488,731,338.00/21,025.86
  6. Step 6: Final answer
    x = 23,244.30

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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.