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Finding the Fourth Proportional to 15,633.60, 21,573.72 and 8,559.88

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Solution

The fourth proportional to 15,633.60, 21,573.72 and 8,559.88 is: 11,812.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,633.60 : 21,573.72 = 8,559.88 : x
  2. Step 2: Convert to fraction form
    15,633.60/21,573.72 = 8,559.88/x
  3. Step 3: Cross multiply
    15,633.60x = 21,573.72 × 8,559.88
  4. Step 4: Simplify right side
    15,633.60x = 184,668,454.35
  5. Step 5: Solve for x
    x = 184,668,454.35/15,633.60
  6. Step 6: Final answer
    x = 11,812.28

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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.