Home / 20,459.58-30,649.29-10,605.36

Finding the Fourth Proportional to 20,459.58, 30,649.29 and 10,605.36

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Solution

The fourth proportional to 20,459.58, 30,649.29 and 10,605.36 is: 15,887.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,459.58 : 30,649.29 = 10,605.36 : x
  2. Step 2: Convert to fraction form
    20,459.58/30,649.29 = 10,605.36/x
  3. Step 3: Cross multiply
    20,459.58x = 30,649.29 × 10,605.36
  4. Step 4: Simplify right side
    20,459.58x = 325,046,754.19
  5. Step 5: Solve for x
    x = 325,046,754.19/20,459.58
  6. Step 6: Final answer
    x = 15,887.26

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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.