Home / 20,722.04-28,595.63-12,669.18

Finding the Fourth Proportional to 20,722.04, 28,595.63 and 12,669.18

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Solution

The fourth proportional to 20,722.04, 28,595.63 and 12,669.18 is: 17,482.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.04 : 28,595.63 = 12,669.18 : x
  2. Step 2: Convert to fraction form
    20,722.04/28,595.63 = 12,669.18/x
  3. Step 3: Cross multiply
    20,722.04x = 28,595.63 × 12,669.18
  4. Step 4: Simplify right side
    20,722.04x = 362,283,183.68
  5. Step 5: Solve for x
    x = 362,283,183.68/20,722.04
  6. Step 6: Final answer
    x = 17,482.99

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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.