Home / 19,681.55-27,160.55-10,728.87

Finding the Fourth Proportional to 19,681.55, 27,160.55 and 10,728.87

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Solution

The fourth proportional to 19,681.55, 27,160.55 and 10,728.87 is: 14,805.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,681.55 : 27,160.55 = 10,728.87 : x
  2. Step 2: Convert to fraction form
    19,681.55/27,160.55 = 10,728.87/x
  3. Step 3: Cross multiply
    19,681.55x = 27,160.55 × 10,728.87
  4. Step 4: Simplify right side
    19,681.55x = 291,402,010.08
  5. Step 5: Solve for x
    x = 291,402,010.08/19,681.55
  6. Step 6: Final answer
    x = 14,805.85

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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.