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Finding the Fourth Proportional to 15,624.53, 21,561.88 and 8,551.40

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Solution

The fourth proportional to 15,624.53, 21,561.88 and 8,551.40 is: 11,800.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,624.53 : 21,561.88 = 8,551.40 : x
  2. Step 2: Convert to fraction form
    15,624.53/21,561.88 = 8,551.40/x
  3. Step 3: Cross multiply
    15,624.53x = 21,561.88 × 8,551.40
  4. Step 4: Simplify right side
    15,624.53x = 184,384,260.63
  5. Step 5: Solve for x
    x = 184,384,260.63/15,624.53
  6. Step 6: Final answer
    x = 11,800.95

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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.