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Finding the Fourth Proportional to 15,624, 21,561.12 and 8,550.48

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Solution

The fourth proportional to 15,624, 21,561.12 and 8,550.48 is: 11,799.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,624 : 21,561.12 = 8,550.48 : x
  2. Step 2: Convert to fraction form
    15,624/21,561.12 = 8,550.48/x
  3. Step 3: Cross multiply
    15,624x = 21,561.12 × 8,550.48
  4. Step 4: Simplify right side
    15,624x = 184,357,925.34
  5. Step 5: Solve for x
    x = 184,357,925.34/15,624
  6. Step 6: Final answer
    x = 11,799.66

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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.