Home / 20,479.24-28,264.07-11,528.51

Finding the Fourth Proportional to 20,479.24, 28,264.07 and 11,528.51

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Solution

The fourth proportional to 20,479.24, 28,264.07 and 11,528.51 is: 15,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479.24 : 28,264.07 = 11,528.51 : x
  2. Step 2: Convert to fraction form
    20,479.24/28,264.07 = 11,528.51/x
  3. Step 3: Cross multiply
    20,479.24x = 28,264.07 × 11,528.51
  4. Step 4: Simplify right side
    20,479.24x = 325,842,501.14
  5. Step 5: Solve for x
    x = 325,842,501.14/20,479.24
  6. Step 6: Final answer
    x = 15,910.87

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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.