Home / 21,043.13-31,561.23-7,001.30

Finding the Fourth Proportional to 21,043.13, 31,561.23 and 7,001.30

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Solution

The fourth proportional to 21,043.13, 31,561.23 and 7,001.30 is: 10,500.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.13 : 31,561.23 = 7,001.30 : x
  2. Step 2: Convert to fraction form
    21,043.13/31,561.23 = 7,001.30/x
  3. Step 3: Cross multiply
    21,043.13x = 31,561.23 × 7,001.30
  4. Step 4: Simplify right side
    21,043.13x = 220,969,779.33
  5. Step 5: Solve for x
    x = 220,969,779.33/21,043.13
  6. Step 6: Final answer
    x = 10,500.81

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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.