Home / 19,681.20-27,159.76-10,729.08

Finding the Fourth Proportional to 19,681.20, 27,159.76 and 10,729.08

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Solution

The fourth proportional to 19,681.20, 27,159.76 and 10,729.08 is: 14,805.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.20 : 27,159.76 = 10,729.08 : x
  2. Step 2: Convert to fraction form
    19,681.20/27,159.76 = 10,729.08/x
  3. Step 3: Cross multiply
    19,681.20x = 27,159.76 × 10,729.08
  4. Step 4: Simplify right side
    19,681.20x = 291,399,237.82
  5. Step 5: Solve for x
    x = 291,399,237.82/19,681.20
  6. Step 6: Final answer
    x = 14,805.97

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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.