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Finding the Fourth Proportional to 13,955.58, 20,925.54 and 5,639.58

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Solution

The fourth proportional to 13,955.58, 20,925.54 and 5,639.58 is: 8,456.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,955.58 : 20,925.54 = 5,639.58 : x
  2. Step 2: Convert to fraction form
    13,955.58/20,925.54 = 5,639.58/x
  3. Step 3: Cross multiply
    13,955.58x = 20,925.54 × 5,639.58
  4. Step 4: Simplify right side
    13,955.58x = 118,011,256.87
  5. Step 5: Solve for x
    x = 118,011,256.87/13,955.58
  6. Step 6: Final answer
    x = 8,456.21

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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.