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Finding the Fourth Proportional to 15,893.12, 21,931.48 and 9,924.44

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Solution

The fourth proportional to 15,893.12, 21,931.48 and 9,924.44 is: 13,695.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,893.12 : 21,931.48 = 9,924.44 : x
  2. Step 2: Convert to fraction form
    15,893.12/21,931.48 = 9,924.44/x
  3. Step 3: Cross multiply
    15,893.12x = 21,931.48 × 9,924.44
  4. Step 4: Simplify right side
    15,893.12x = 217,657,657.37
  5. Step 5: Solve for x
    x = 217,657,657.37/15,893.12
  6. Step 6: Final answer
    x = 13,695.09

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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.