Home / 19,971.21-27,559.85-11,018.63

Finding the Fourth Proportional to 19,971.21, 27,559.85 and 11,018.63

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Solution

The fourth proportional to 19,971.21, 27,559.85 and 11,018.63 is: 15,205.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,971.21 : 27,559.85 = 11,018.63 : x
  2. Step 2: Convert to fraction form
    19,971.21/27,559.85 = 11,018.63/x
  3. Step 3: Cross multiply
    19,971.21x = 27,559.85 × 11,018.63
  4. Step 4: Simplify right side
    19,971.21x = 303,671,803.81
  5. Step 5: Solve for x
    x = 303,671,803.81/19,971.21
  6. Step 6: Final answer
    x = 15,205.48

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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.