Home / 21,938.67-30,275.24-12,507.03

Finding the Fourth Proportional to 21,938.67, 30,275.24 and 12,507.03

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Solution

The fourth proportional to 21,938.67, 30,275.24 and 12,507.03 is: 17,259.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,938.67 : 30,275.24 = 12,507.03 : x
  2. Step 2: Convert to fraction form
    21,938.67/30,275.24 = 12,507.03/x
  3. Step 3: Cross multiply
    21,938.67x = 30,275.24 × 12,507.03
  4. Step 4: Simplify right side
    21,938.67x = 378,653,272.40
  5. Step 5: Solve for x
    x = 378,653,272.40/21,938.67
  6. Step 6: Final answer
    x = 17,259.63

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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.