Home / 21,512.64-29,688.45-11,952.54

Finding the Fourth Proportional to 21,512.64, 29,688.45 and 11,952.54

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Solution

The fourth proportional to 21,512.64, 29,688.45 and 11,952.54 is: 16,495.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,512.64 : 29,688.45 = 11,952.54 : x
  2. Step 2: Convert to fraction form
    21,512.64/29,688.45 = 11,952.54/x
  3. Step 3: Cross multiply
    21,512.64x = 29,688.45 × 11,952.54
  4. Step 4: Simplify right side
    21,512.64x = 354,852,386.16
  5. Step 5: Solve for x
    x = 354,852,386.16/21,512.64
  6. Step 6: Final answer
    x = 16,495.06

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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.