Home / 19,681.16-27,159.63-10,728.72

Finding the Fourth Proportional to 19,681.16, 27,159.63 and 10,728.72

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Solution

The fourth proportional to 19,681.16, 27,159.63 and 10,728.72 is: 14,805.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.16 : 27,159.63 = 10,728.72 : x
  2. Step 2: Convert to fraction form
    19,681.16/27,159.63 = 10,728.72/x
  3. Step 3: Cross multiply
    19,681.16x = 27,159.63 × 10,728.72
  4. Step 4: Simplify right side
    19,681.16x = 291,388,065.57
  5. Step 5: Solve for x
    x = 291,388,065.57/19,681.16
  6. Step 6: Final answer
    x = 14,805.44

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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.