Home / 20,639.32-28,482.06-11,207.32

Finding the Fourth Proportional to 20,639.32, 28,482.06 and 11,207.32

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Solution

The fourth proportional to 20,639.32, 28,482.06 and 11,207.32 is: 15,465.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.32 : 28,482.06 = 11,207.32 : x
  2. Step 2: Convert to fraction form
    20,639.32/28,482.06 = 11,207.32/x
  3. Step 3: Cross multiply
    20,639.32x = 28,482.06 × 11,207.32
  4. Step 4: Simplify right side
    20,639.32x = 319,207,560.68
  5. Step 5: Solve for x
    x = 319,207,560.68/20,639.32
  6. Step 6: Final answer
    x = 15,465.99

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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.