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Finding the Fourth Proportional to 19,224.84, 28,827.20 and 8,685.79

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Solution

The fourth proportional to 19,224.84, 28,827.20 and 8,685.79 is: 13,024.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,224.84 : 28,827.20 = 8,685.79 : x
  2. Step 2: Convert to fraction form
    19,224.84/28,827.20 = 8,685.79/x
  3. Step 3: Cross multiply
    19,224.84x = 28,827.20 × 8,685.79
  4. Step 4: Simplify right side
    19,224.84x = 250,386,962.06
  5. Step 5: Solve for x
    x = 250,386,962.06/19,224.84
  6. Step 6: Final answer
    x = 13,024.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.