Home / 19,681.32-27,159.89-10,728.90

Finding the Fourth Proportional to 19,681.32, 27,159.89 and 10,728.90

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Solution

The fourth proportional to 19,681.32, 27,159.89 and 10,728.90 is: 14,805.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.32 : 27,159.89 = 10,728.90 : x
  2. Step 2: Convert to fraction form
    19,681.32/27,159.89 = 10,728.90/x
  3. Step 3: Cross multiply
    19,681.32x = 27,159.89 × 10,728.90
  4. Step 4: Simplify right side
    19,681.32x = 291,395,690.18
  5. Step 5: Solve for x
    x = 291,395,690.18/19,681.32
  6. Step 6: Final answer
    x = 14,805.70

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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.