Home / 19,681.02-27,159.43-10,728.60

Finding the Fourth Proportional to 19,681.02, 27,159.43 and 10,728.60

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Solution

The fourth proportional to 19,681.02, 27,159.43 and 10,728.60 is: 14,805.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.02 : 27,159.43 = 10,728.60 : x
  2. Step 2: Convert to fraction form
    19,681.02/27,159.43 = 10,728.60/x
  3. Step 3: Cross multiply
    19,681.02x = 27,159.43 × 10,728.60
  4. Step 4: Simplify right side
    19,681.02x = 291,382,660.70
  5. Step 5: Solve for x
    x = 291,382,660.70/19,681.02
  6. Step 6: Final answer
    x = 14,805.26

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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.