Home / 20,139.02-27,792.68-11,186.59

Finding the Fourth Proportional to 20,139.02, 27,792.68 and 11,186.59

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Solution

The fourth proportional to 20,139.02, 27,792.68 and 11,186.59 is: 15,437.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.02 : 27,792.68 = 11,186.59 : x
  2. Step 2: Convert to fraction form
    20,139.02/27,792.68 = 11,186.59/x
  3. Step 3: Cross multiply
    20,139.02x = 27,792.68 × 11,186.59
  4. Step 4: Simplify right side
    20,139.02x = 310,905,316.16
  5. Step 5: Solve for x
    x = 310,905,316.16/20,139.02
  6. Step 6: Final answer
    x = 15,437.96

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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.