Home / 19,681.30-27,159.99-10,728.80

Finding the Fourth Proportional to 19,681.30, 27,159.99 and 10,728.80

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Solution

The fourth proportional to 19,681.30, 27,159.99 and 10,728.80 is: 14,805.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.30 : 27,159.99 = 10,728.80 : x
  2. Step 2: Convert to fraction form
    19,681.30/27,159.99 = 10,728.80/x
  3. Step 3: Cross multiply
    19,681.30x = 27,159.99 × 10,728.80
  4. Step 4: Simplify right side
    19,681.30x = 291,394,100.71
  5. Step 5: Solve for x
    x = 291,394,100.71/19,681.30
  6. Step 6: Final answer
    x = 14,805.63

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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.