Home / 19,681.49-27,160.31-10,729.21

Finding the Fourth Proportional to 19,681.49, 27,160.31 and 10,729.21

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Solution

The fourth proportional to 19,681.49, 27,160.31 and 10,729.21 is: 14,806.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.49 : 27,160.31 = 10,729.21 : x
  2. Step 2: Convert to fraction form
    19,681.49/27,160.31 = 10,729.21/x
  3. Step 3: Cross multiply
    19,681.49x = 27,160.31 × 10,729.21
  4. Step 4: Simplify right side
    19,681.49x = 291,408,616.01
  5. Step 5: Solve for x
    x = 291,408,616.01/19,681.49
  6. Step 6: Final answer
    x = 14,806.23

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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.