Home / 19,656.95-27,128.12-11,160.45

Finding the Fourth Proportional to 19,656.95, 27,128.12 and 11,160.45

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Solution

The fourth proportional to 19,656.95, 27,128.12 and 11,160.45 is: 15,402.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,656.95 : 27,128.12 = 11,160.45 : x
  2. Step 2: Convert to fraction form
    19,656.95/27,128.12 = 11,160.45/x
  3. Step 3: Cross multiply
    19,656.95x = 27,128.12 × 11,160.45
  4. Step 4: Simplify right side
    19,656.95x = 302,761,971.05
  5. Step 5: Solve for x
    x = 302,761,971.05/19,656.95
  6. Step 6: Final answer
    x = 15,402.29

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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.