Home / 20,639.34-28,482.30-11,208.06

Finding the Fourth Proportional to 20,639.34, 28,482.30 and 11,208.06

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Solution

The fourth proportional to 20,639.34, 28,482.30 and 11,208.06 is: 15,467.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639.34 : 28,482.30 = 11,208.06 : x
  2. Step 2: Convert to fraction form
    20,639.34/28,482.30 = 11,208.06/x
  3. Step 3: Cross multiply
    20,639.34x = 28,482.30 × 11,208.06
  4. Step 4: Simplify right side
    20,639.34x = 319,231,327.34
  5. Step 5: Solve for x
    x = 319,231,327.34/20,639.34
  6. Step 6: Final answer
    x = 15,467.13

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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.