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Finding the Fourth Proportional to 15,900.60, 21,953.52 and 14,216.64

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Solution

The fourth proportional to 15,900.60, 21,953.52 and 14,216.64 is: 19,628.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.60 : 21,953.52 = 14,216.64 : x
  2. Step 2: Convert to fraction form
    15,900.60/21,953.52 = 14,216.64/x
  3. Step 3: Cross multiply
    15,900.60x = 21,953.52 × 14,216.64
  4. Step 4: Simplify right side
    15,900.60x = 312,105,290.57
  5. Step 5: Solve for x
    x = 312,105,290.57/15,900.60
  6. Step 6: Final answer
    x = 19,628.52

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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.