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Finding the Fourth Proportional to 21,461.94, 29,610.50 and 12,507.39

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Solution

The fourth proportional to 21,461.94, 29,610.50 and 12,507.39 is: 17,256.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,461.94 : 29,610.50 = 12,507.39 : x
  2. Step 2: Convert to fraction form
    21,461.94/29,610.50 = 12,507.39/x
  3. Step 3: Cross multiply
    21,461.94x = 29,610.50 × 12,507.39
  4. Step 4: Simplify right side
    21,461.94x = 370,350,009.06
  5. Step 5: Solve for x
    x = 370,350,009.06/21,461.94
  6. Step 6: Final answer
    x = 17,256.13

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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.