Home / 19,685.31-27,177.03-12,968.49

Finding the Fourth Proportional to 19,685.31, 27,177.03 and 12,968.49

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Solution

The fourth proportional to 19,685.31, 27,177.03 and 12,968.49 is: 17,903.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,685.31 : 27,177.03 = 12,968.49 : x
  2. Step 2: Convert to fraction form
    19,685.31/27,177.03 = 12,968.49/x
  3. Step 3: Cross multiply
    19,685.31x = 27,177.03 × 12,968.49
  4. Step 4: Simplify right side
    19,685.31x = 352,445,041.78
  5. Step 5: Solve for x
    x = 352,445,041.78/19,685.31
  6. Step 6: Final answer
    x = 17,903.96

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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.