Home / 21,041.26-31,563.58-7,000.78

Finding the Fourth Proportional to 21,041.26, 31,563.58 and 7,000.78

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Solution

The fourth proportional to 21,041.26, 31,563.58 and 7,000.78 is: 10,501.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.26 : 31,563.58 = 7,000.78 : x
  2. Step 2: Convert to fraction form
    21,041.26/31,563.58 = 7,000.78/x
  3. Step 3: Cross multiply
    21,041.26x = 31,563.58 × 7,000.78
  4. Step 4: Simplify right side
    21,041.26x = 220,969,679.59
  5. Step 5: Solve for x
    x = 220,969,679.59/21,041.26
  6. Step 6: Final answer
    x = 10,501.73

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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.