Home / 19,681.08-27,159.34-10,728.75

Finding the Fourth Proportional to 19,681.08, 27,159.34 and 10,728.75

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Solution

The fourth proportional to 19,681.08, 27,159.34 and 10,728.75 is: 14,805.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.08 : 27,159.34 = 10,728.75 : x
  2. Step 2: Convert to fraction form
    19,681.08/27,159.34 = 10,728.75/x
  3. Step 3: Cross multiply
    19,681.08x = 27,159.34 × 10,728.75
  4. Step 4: Simplify right side
    19,681.08x = 291,385,715.38
  5. Step 5: Solve for x
    x = 291,385,715.38/19,681.08
  6. Step 6: Final answer
    x = 14,805.38

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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.