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Finding the Fourth Proportional to 14,220.88, 19,612.04 and 8,916.24

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Solution

The fourth proportional to 14,220.88, 19,612.04 and 8,916.24 is: 12,296.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,220.88 : 19,612.04 = 8,916.24 : x
  2. Step 2: Convert to fraction form
    14,220.88/19,612.04 = 8,916.24/x
  3. Step 3: Cross multiply
    14,220.88x = 19,612.04 × 8,916.24
  4. Step 4: Simplify right side
    14,220.88x = 174,865,655.53
  5. Step 5: Solve for x
    x = 174,865,655.53/14,220.88
  6. Step 6: Final answer
    x = 12,296.40

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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.