Home / 20,610.69-28,434.65-13,448.99

Finding the Fourth Proportional to 20,610.69, 28,434.65 and 13,448.99

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Solution

The fourth proportional to 20,610.69, 28,434.65 and 13,448.99 is: 18,554.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.69 : 28,434.65 = 13,448.99 : x
  2. Step 2: Convert to fraction form
    20,610.69/28,434.65 = 13,448.99/x
  3. Step 3: Cross multiply
    20,610.69x = 28,434.65 × 13,448.99
  4. Step 4: Simplify right side
    20,610.69x = 382,417,114.09
  5. Step 5: Solve for x
    x = 382,417,114.09/20,610.69
  6. Step 6: Final answer
    x = 18,554.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.