Home / 19,681.33-27,159.54-10,728.64

Finding the Fourth Proportional to 19,681.33, 27,159.54 and 10,728.64

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Solution

The fourth proportional to 19,681.33, 27,159.54 and 10,728.64 is: 14,805.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.33 : 27,159.54 = 10,728.64 : x
  2. Step 2: Convert to fraction form
    19,681.33/27,159.54 = 10,728.64/x
  3. Step 3: Cross multiply
    19,681.33x = 27,159.54 × 10,728.64
  4. Step 4: Simplify right side
    19,681.33x = 291,384,927.23
  5. Step 5: Solve for x
    x = 291,384,927.23/19,681.33
  6. Step 6: Final answer
    x = 14,805.14

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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.