Home / 15,622.80-21,559.72-8,549.20

Finding the Fourth Proportional to 15,622.80, 21,559.72 and 8,549.20

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Solution

The fourth proportional to 15,622.80, 21,559.72 and 8,549.20 is: 11,798.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,622.80 : 21,559.72 = 8,549.20 : x
  2. Step 2: Convert to fraction form
    15,622.80/21,559.72 = 8,549.20/x
  3. Step 3: Cross multiply
    15,622.80x = 21,559.72 × 8,549.20
  4. Step 4: Simplify right side
    15,622.80x = 184,318,358.22
  5. Step 5: Solve for x
    x = 184,318,358.22/15,622.80
  6. Step 6: Final answer
    x = 11,798.04

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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.