Home / 19,681.76-27,160.84-10,729.28

Finding the Fourth Proportional to 19,681.76, 27,160.84 and 10,729.28

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Solution

The fourth proportional to 19,681.76, 27,160.84 and 10,729.28 is: 14,806.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.76 : 27,160.84 = 10,729.28 : x
  2. Step 2: Convert to fraction form
    19,681.76/27,160.84 = 10,729.28/x
  3. Step 3: Cross multiply
    19,681.76x = 27,160.84 × 10,729.28
  4. Step 4: Simplify right side
    19,681.76x = 291,416,257.40
  5. Step 5: Solve for x
    x = 291,416,257.40/19,681.76
  6. Step 6: Final answer
    x = 14,806.41

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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.