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Finding the Fourth Proportional to 15,284.96, 21,090.48 and 10,256.48

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Solution

The fourth proportional to 15,284.96, 21,090.48 and 10,256.48 is: 14,152.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,284.96 : 21,090.48 = 10,256.48 : x
  2. Step 2: Convert to fraction form
    15,284.96/21,090.48 = 10,256.48/x
  3. Step 3: Cross multiply
    15,284.96x = 21,090.48 × 10,256.48
  4. Step 4: Simplify right side
    15,284.96x = 216,314,086.31
  5. Step 5: Solve for x
    x = 216,314,086.31/15,284.96
  6. Step 6: Final answer
    x = 14,152.09

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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.