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Finding the Fourth Proportional to 14,411.64, 19,890.54 and 8,124.60

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Solution

The fourth proportional to 14,411.64, 19,890.54 and 8,124.60 is: 11,213.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,411.64 : 19,890.54 = 8,124.60 : x
  2. Step 2: Convert to fraction form
    14,411.64/19,890.54 = 8,124.60/x
  3. Step 3: Cross multiply
    14,411.64x = 19,890.54 × 8,124.60
  4. Step 4: Simplify right side
    14,411.64x = 161,602,681.28
  5. Step 5: Solve for x
    x = 161,602,681.28/14,411.64
  6. Step 6: Final answer
    x = 11,213.34

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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.