Home / 19,719.02-27,211.87-11,220.95

Finding the Fourth Proportional to 19,719.02, 27,211.87 and 11,220.95

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Solution

The fourth proportional to 19,719.02, 27,211.87 and 11,220.95 is: 15,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.02 : 27,211.87 = 11,220.95 : x
  2. Step 2: Convert to fraction form
    19,719.02/27,211.87 = 11,220.95/x
  3. Step 3: Cross multiply
    19,719.02x = 27,211.87 × 11,220.95
  4. Step 4: Simplify right side
    19,719.02x = 305,343,032.68
  5. Step 5: Solve for x
    x = 305,343,032.68/19,719.02
  6. Step 6: Final answer
    x = 15,484.70

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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.