Home / 19,680.68-27,159.36-10,728.02

Finding the Fourth Proportional to 19,680.68, 27,159.36 and 10,728.02

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Solution

The fourth proportional to 19,680.68, 27,159.36 and 10,728.02 is: 14,804.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.68 : 27,159.36 = 10,728.02 : x
  2. Step 2: Convert to fraction form
    19,680.68/27,159.36 = 10,728.02/x
  3. Step 3: Cross multiply
    19,680.68x = 27,159.36 × 10,728.02
  4. Step 4: Simplify right side
    19,680.68x = 291,366,157.27
  5. Step 5: Solve for x
    x = 291,366,157.27/19,680.68
  6. Step 6: Final answer
    x = 14,804.68

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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.